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1d10509b-79d1-4c6a-8be8-fefb79814616 | will exhibit a sawtooth pattern, as illustrated in Fig. 5 for an
injected polarization level of ±85percent, an equilibrium
polarization of 30 percent, and a target average polarization
of 80 percent. As shown in the figure, bunches injected
with negative polarization (spins parallel to the main dipole
field) depolarize... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
8dd8ee4c-af27-4543-bf65-71703a75dbd0 | developed over several years by BNL and Stony Brook Uni-
versityandiscapableofdeliveringbuncheswithupto11nC
charge [10]. A Wien filter is then used to rotate the spins
into the vertical direction before acceleration in a 750 MeV
normal-conductingS-bandLINAC.Upto28singlebunches
of 1 nC each are accelerated at a rate of ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
937afc26-e00a-46b9-92ef-e4c5088bfebd | circumferenceRCSensurespolarizationpreservationduring
the energy ramp. This is accomplished by a combination
of high periodicity and high (integer) vertical tune, which
drivesthelowest-orderintrinsicresonancestobeamenergies
outside the operational energy range of the RCS [11]. As a
consequence,thebeamdoesnotencounteran... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
189e83a2-566b-4560-930d-3854ccdd1731 | CD-0 (“Mission Need”) in December 2019, and the siteselection occurred shortly after in January 2020. The DOE
CD-1(“AlternativeSelectionandCostRange”)wasreceived
in2021,andtheprojectiscurrentlygearingupfortheCD-2
review(“PerformanceBaseline”)inmid2026,potentially
inconjunctionwithCD-3(“StartofConstruction”). Early
proc... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
d382fd8b-e8c1-40af-9c11-8cd3d33204f6 | (UnitedStates);ThomasJeffersonNationalAcceleratorFacil-
ity(TJNAF),NewportNews,VA(UnitedStates),Rep.,Feb.
2021. doi:10.2172/1765663
[3]F. Willeke, “The HERA lepton–proton collider”, in Chal-
lenges And Goals For Accelerators In The XXI Century . Apr.
2016, pp. 225–242. doi:10.1142/9789814436403_0015
[4] May, 1995. http... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
c582b30e-a796-4a71-b67c-acecf42cdefd | collider”, Phys. Rev. Lett. ,vol.132,no.20,p.205001,May
2024. doi:10.1103/PhysRevLett.132.205001
[7]A. V. Fedotov et al., “Experimental demonstration of hadron
beam cooling using radio-frequency accelerated electron
bunches”, Phys. Rev. Lett. , vol. 124, no. 8, p. 084801, Feb.
2020. doi:10.1103/PhysRevLett.124.084801
[... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
a3ac6f11-b205-4888-b37b-afaa610dc3c3 | ingdistributedbraggreflectorgaasphotocathode”, Applied
Physics Letters , vol. 124, no. 25, p. 254101, Jun. 2024.
doi:10.1063/5.0216694
[11]V. H. Ranjbar et al., “Spin resonance free electron ring in-
jector”, Phys. Rev. Accel. Beams , vol. 21,no. 11, p. 111003,
Nov. 2018.
doi:10.1103/PhysRevAccelBeams.21.111003 | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\TUOAB - TUOAB MC1 Contributed Oral Presentations_ MC1 Contributed Oral Presentations\TUOAB4.pdf | 3 |
07b8db41-5ad5-4ac9-838e-644c9eda987e | ALBA CONTROLS SYSTEM SOFTWARE STACK UPGRADE
G. Cuni, F. Becheri, S. Blanch-Torné, C. Falcon-Torres, C. Pascual-Izarra, Z. Reszela, S. Rubio-
Manrique (ALBA-CELLS, Barcelona, Spain)
Abstract
ALBA, a 3rd Generation Synchroton Light Source
located near Barcelona in Spain, is in operation since
2012. During t... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
237c403e-b13f-4ee5-a8e8-3d835129db17 | the process of switching to the Debian OS, upgrading to
the Tango 9 Control System framework including the
Tango Archiving System to HDB++, migrating our code
to Python 3, and migrating our GUIs to PyQt5 and
PyQtGraph, etc. In order to ensure the project quality and
to facilitate future upgrades, we try... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
65365761-7408-4e09-86e3-0bdb9595f217 | use standard tools and be as homogeneous as possible in
order to ease development, training, and troubleshooting.
Beamlines and accelerators have the same software
structure and use the same applications wherever it is
possible, for example, vacuum or motion control.
Controls Software Stack Overview
ALBA co... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
b9afc634-24b9-4a6a-85a1-3082b17dc3cf | using Taurus [3], a library for building desktop
applications in PyQt. Taurus was initially connecting only
to Tango models but over years its architecture evolved
towards a highly modular and data source agnostic
solution broadly used in numerous scientific installations.Apart from Taurus, other gene... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
83f7f55a-45b4-4c7e-b2c9-5812e6a59f1c | MacroServer and Device Pool for interfacing with
the hardware on the server-side.
•Panic, an IEC62682 compliant Alarm Handling suite
(Alarm Handling Panic GUI and PyAlarm) [ 5]
capable of messaging and automated execution of
control system actions.
•Generic tools and device servers (Tango
import/expor... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
0c4a232b-7daa-4ad9-9742-a13cd712f8f8 | software under maintenance with the “bliss” system. The
bliss system, developed by the ESRF, is an rpm-based
packaging and Software Configuration Management
(SCM) tool. It comprises two applications: the
blissbuilder and the blissinstaller, both offering intuitive
to “nonpackaging experts” graphical way of de... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
83dd2877-ec0b-4871-bfde-29811287eb64 | centralized in the computing room. Most of the controls
hosts run a standard Linux distribution which at the
beginning was openSUSE but there are also some
Windows hosts, mainly workstations for data analysis.
ALBA CONTROLS SYSTEM SOFTWARE
OBSOLESCENCE
A control system for a scientific facility such as A... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 0 |
28dd0d63-a569-4a75-9ac3-7a07d7570394 | up-to-date libraries and other dependencies, etc.
Similarly, the different components of the system are
heavily interconnected, which makes that, very often, the
upgrade of a component requires similar upgrades in other
related components.
While the initial stack of technologies and strategic
decisio... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
cb1b21a5-0b16-4db3-bba5-ee7d1785038c | even before ALBA entered into operation. This imposed
many limitations on the support for new software and
hardware, due to being tied to core libraries and modules
(e.g. libc, Python, numpy, PyQt4,...) that dated back to
2008. As this situation became increasingly problematic,
some selected machines, typically thos... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
6ae6f59e-9fc8-47df-a718-ebb492de25b6 | up-to-date platforms. This situation was not sustainable,
and by 2015 a task force was constituted to evaluate the
different options for a general upgrade of the OS of
control system machines and also on the workflows for
simplifying future upgrades. As a result, in 2018 ALBA
started replacing OpenSuSE with De... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
b762c483-22ce-4fdb-ba50-96e59628f314 | third-party repositories. Furthermore, it was decided to
separate the management of the software that was
installed as part of the control system from that related to
the "general operating system". To that effect, and in
order to facilitate the packaging tasks, the "bliss" system
from the ESRF w... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
5e4b71c1-cbcf-47e6-a587-54da752670ce | standard package build and management tools from the
Linux distributions were much less user friendly, but it
introduced several limitations that recommended its
reconsideration:
•the separation between "general system" and "control
system" was often not clear (e.g. in the case of
generic libraries such... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
c3f9eba9-7c9a-4ffa-bcc2-94b50970e13e | •the custom nature of the bliss packages prevented us
from collaborating with other facilities in the
packaging of software (even for software developed
in collaboration, such as e.g. Tango)
•while bliss had a very gentle learning curve, it being
a custom solution often required using workarounds
to several of it... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
ae56bef8-e308-4f2d-ac91-8ca8f07d799e | and standard package management tools as part of the
change to an updated OS.
Python
Most of the software developed and maintained at
ALBA is based on Python. Because of our dependency on
old OpenSuse 11.1 we were forced to support Python 2.6
this disincentivated the adoption of Python 3 within the
ALBA control... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
591ec53b-116b-46f0-bd45-1b83ad970fb8 | A lot of effort is being put on adapting our software to
Python 3, starting in 2019 when Taurus started supporting
it (with a common code base that also supported
Python2), and following with Sardana, some GUIs, Tango
Device Servers, etc. mostly associated to the OS update of
machines in the Control Room and Be... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 1 |
267cd87e-62be-4394-968c-ae61b12145fb | Tango
The development of ALBA Control System was
initiated using Tango 5 on OpenSuSE 10.2 platform. Prior
to starting operation it already evolved to Tango 6 over
OpenSuSE 11.1 and later to Tango 7, enhancing the
performance of the system and providing what has been
our stable platform for 10 years. Despi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
88fe1347-d37b-4446-ab8e-ef66e1266052 | system was deployed. Tango 8 introduced ZMQ as a new
event system, thus increasing the theoretical performance
of the control system and eliminating the need for a
permanent daemon dedicated to event dispatching, which
was a recurrent cause of memory leaks and event
bottlenecks. This hybrid system perf... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
8c4cd7cd-1dfe-42dd-b2f5-4f03ad3b314e | alternative for the main Accelerators Control System (due
to the legacy OS 32 bit dependency), all the work done on
CI for the Tango 8 upgrade became the base for the
current CI/CD workflow, which allowed a much
smoother upgrade of both OS and Tango to the latest
versions (Tango 9.3.4 over Debian 9), w... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
f5673775-b7b9-49e9-a8fe-58e5d4d1b090 | was originally based on PyQt4 [ 7] for its general widgets
and on PyQwt5 [ 8] for its plot widgets. PyQt4 reached its
end of life in 2018 and PyQwt5 was by then already
unmaintained (its latest release from 2011) and was never
ported to PyQt5 or Python 3.
As with Python, the need to run the control GUIs on an
ob... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
7271c0a3-5bbb-46d6-987d-0eceb60a8a73 | because they still use Qt APIs that were already
deprecated in 2013. These are being gradually migrated as
part of the effort to update the OS of machines in the
Control Room and Beamlines.
ALBA CONTROLS SYSTEM SOFTWARE
UPGRADE
New Operating System Selection
In 2015 a task force involving various members of the... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
ca558670-20c4-486b-a99d-5d0d5ee3874c | control system we stressed the availability of scientific
software and the support of scientific instrumentation and
varied hardware platforms, while for generic IT systems
the focus was on vendor support and network and
filesystem robustness. As a result, OpenSuSE Leap and
Debian were shortlisted as the candid... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
3a99e3ab-d977-4e0c-9c55-62d35b0ace83 | distribution by its authors and then those packaged
unofficially by some third-party
•usage in other similar facilities, specially within the
Tango Collaboration
•relevant hardware platforms supported. In order of
priority: amd64, i386 and arm
•quality of the documentation and community support
•quality of native pa... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 2 |
0065789f-3d47-4aa9-b4c4-8d80a92475f3 | of porting existing devices, drivers, and applications from
32 to 64 bits hardware keeping consistency between the
new and legacy control systems as well as the necessity to
keep our CI/CD workflows in-house to avoid dependency
from external services. To be able to recompile and test
all the software stack onto ne... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
49fbfe1c-a84a-4ddc-96e5-c55a536f9e67 | aspects being evaluated and had better support to all our
hardware platforms, to the point that it was enough to
overcome the main advantage of OpenSuSE which was
that it involved less change with respect to the old system.
As a consequence, Debian was chosen and, in 2018 the
migration started with the upgrade of the C... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
e25853ec-7af8-461d-afca-aea104880b6e | building and managing the control system packages.
As part of the new OS evaluation, we evaluated the
"OpenSuse Build Service" [ 10] and the Debian packaging
toolchain. Of both systems, we valued that the packaging
could be managed with a workflow involving a version
control system: a domain-specific one inspired in CV... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
22e28ef5-2767-4c60-89c4-0125adc34e2a | upgrading the Control Room machines.
On a first stage, the packaging workflow was done
manually using the mentioned Docker image but, with the
introduction of "salsa" service by Debian [ 12], we
extended the Debian CI pipeline to automate the process
[13]. Currently, the whole packaging process is done b... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
73b873bc-115b-4ec0-950a-437e2175cc68 | interventions can be entirely done using the web interface
of Gitlab, eliminating the need of locally installing the
packaging toolchain. The same toolchain is also capable
of promoting the package to a production repository if the
user confirms that it is ready after testing it using the
staging repository.
The packag... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
b4d54d6a-1adb-411b-a093-5bb7b4fff38e | consoles has been performed over a 2 years period, in
which all legacy OpenSuSE machines have been replaced
by Debian, upgrading from Taurus 3 to Taurus 4 and
Tango 9 in the process.
Paradoxically, the performance increase provided by
Tango 9 caused several issues on old applications, due to
the higher event t... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
8c6e8e18-6fe6-454f-b2c4-0b4b99d3f584 | solutions required on Taurus itself, allowing the upgrade
of multiple applications at once and allowing to solve
issues once-for-all as they appeared providing flexibility
at the application level to choose between polling or
event-based refresh for each attribute.
In addition to the Tango upgrade, seve... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
bef9108b-aab8-4664-be76-c4e39c79f2b2 | for which new Python 3 database extractors have been
developed capable of online decimatiob of the incoming
data from the high-performance event system.
The usage of Taurus framework for developing all
custom applications required for day-to-day operation
allowed to do a transparent upgrade of those applica... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 3 |
67567a3d-f16c-44e8-85bc-ff841af9a032 | Tango Device Servers Upgrade
Upgrading device servers to new technologies have
become one of the most difficult processes, due to the
dependency on old hardware and the lack of drivers for
newer operating systems. Industrial PC's devoted to
hardware testing have been deployed on several ALBA
laboratories fo... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
e34f98d2-28be-4ca2-a484-6715ef205b45 | hosts. We are in the process of migrating all serial-line
based device servers using serial-to-ethernet adapters,
thus eliminating the need for Industrial PC's for most
vacuum systems, and a new 32 bit Debian 9 image is
under development to replace most of our legacy control
systems. We expect to migrate t... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
ab0c40c3-d290-46ff-9ece-fe4902a137f6 | shared libraries (fandango [ 17], panic [ 5],
pytangoarchiving) and the adoption of the new Python HL
Tango API for every new development, which provides
fully Python 3 compatible code.
Sardana Python 3
Sardana is used by various European institutes, mainly
synchrotrons, and at ALBA it is used at the beamlines,
a... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
f935bd38-7c83-43c8-a676-22327237ad1e | accelerator upgrade program they would like to use
Sardana with Python 3.
Sardana is a final application, not a library, and it
followed a different migration approach than the Taurus
project. Sardana codebase was migrated to Python 3
without supporting Python 2 at the same time. Sardana
users hi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
0ec81024-1769-4d0e-bfc5-21238894d97d | to upgrade only the strictly necessary part of the controls
system to provide to the users the Sardana service running
with Python 3. As a consequence, the coexistence of
different software versions in different sub-systems was
assumed. A transversal workforce of nine controls
engineers was formed to work... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
2e5f459c-1cf8-4b5d-a938-6b196655aa94 | event system stopped working. In the second phase, the
Sardana Tango servers were moved to dedicated VMs and
a new workstation was prepare to run the Sardana client
applications. Here, appeared problems with the Tango 9
causing deadlocks and hangs of the experiment
procedures.
The upgrade process required from th... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
e34c0515-4acb-4298-8a0b-83745c49fcc6 | community are also very well advanced in the upgrade
process.
Following Debian updates
The selection of Debian as a new OS for the control
system was never considered as a one-time upgrade effort
but was more a commitment to try to follow future
Debian releases according to the needs and capabilities of
the AL... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
a2460a27-5444-4701-9bad-d16ffcb5ff69 | short shutdowns (several times per year). This upgrades
only the non-control-system packages and the whole
process is highly automated using the Software
Configuration Management tool.
Due to the still not fully automated packaging creation
for the current and future Debian releases, the upgrade to
Debian 1... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 4 |
7583bb4c-e153-4de2-9a13-f2dc3a2760bc | project development thanks to the updated dependency
stack. This will be a minor effort thanks to the automatic
packaging and isolation of the Sardana Tango device
servers on a dedicated VM.
Debian 11 was released in August 2021 and upgrading
to it instead of Debian 10 has been discussed and is still
an option,... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
503350bb-712e-4262-9fc4-079fd072a0df | Testing
Testing plays a very important role in the control
system upgrade process, and testing strategy must be
tailored to the nature and development status of each of
the projects.
The SEP5 [ 18] introduced the first conventions for
developing automatic tests with unittest module (part of
the Py... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
77855494-192d-499d-8af7-04c5dc7c1325 | developing automatic tests because this second one
provides a better programming interface and many useful
features available out-of-the-box e.g. fixtures,
parameterization of tests, code patching, temporary
resources context managers.
Developing automatic tests for the Tango control
system requi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
5256e2e0-bb21-4cc1-a37a-a3fa248b85d0 | control and isolation.
Automatic tests for the controls software can either
interface with the real hardware or with simulators [ 20].
Currently, we employ this second strategy, for example,
in the case of Sardana all the possible controller types e.g.
motors or experimental channels are available in a
si... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
1cf324ed-270a-4be8-9bd1-3e167c9a79c9 | The advantages of using Continuous Integration for the
testing of both Taurus and Sardana have already been
described in the previous section. Our experience in these
cases has been unequivocally positive, because the use of
CI not only improved the overall quality of the code but
also enabled a much more ag... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
2ab4bc59-bd39-49d1-beb4-95384b994420 | always available for inspection, has also facilitated the
collaboration and support in the packaging process.
Additionally to the use of CI/CD for the packaging of
our internal developments, we are also using it for
publishing some of our software to PyPI, to Conda-Forge
and other Anaconda Cloud channels, and e... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
70794092-79a3-4380-b753-b83da7bc4a0e | the ReadTheDocs service which we found excellent.
However, we eventually decided to move the
documentation build to the same CI system that we used
for the code (first, Travis CI and now Gitlab CI [ 21]) in
order to unify the CI. Apart from these projects, we also
use Gitlab CI for autogenerating docum... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
a31e23ae-468b-4812-bfce-84dc98ec3b5d | Icepapcms, Archiving, etc. The application of the Salt
recipes allows us to automate the installation and
configuration of the same Services in parallel in different
machines and in a reproducible way. Each remote node is
configured through Salt Grains that specify which
Services should be installed... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 5 |
61a89bac-5ea7-4729-806d-7d03093819ee | services, the proper workflow for testing a new version,
or the use of a graphical user interface.
One particularly problematic point is how to manage
rollbacks: the Salt recipes express the changes to be done
in the target machine, which is not exactly equivalent to
specify the state of the system. It is easy to conce... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
596b4fec-dab3-4378-b26f-a19d7588eaf5 | operation of ALBA Accelerators. It required careful
testing of every application, including hardware
interaction, before applying any update to the main
operator consoles. The need for hardware tests also forced
us to integrate the testing procedures with the
Accelerators Operation calendar, th... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
f255cc3e-f5fa-44d4-a0a5-bed7f9085c22 | software package prior to its propagation to the
Control Room operators consoles. Applications are
kept on this stage for at least a machine-run period (4
to 5 weeks) prior to their promotion to the production
environment (only after validation by users).
•Production: Finally, validated applications available
in... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
9a646108-ce91-4cf2-b2a3-01287c19ff37 | the system. In the case hot-fixes are required, a special
mechanism to perform updates during machine days is
enabled (once per week), which requires a notification to
affected users via an Accelerator Interventions ticketing
system and an update of the configuration system (Salt
recipes), which is managed by a g... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
7f005fca-ec3b-472c-91f7-48451d0a0b4e | we are currently evaluating how to deploy our typical
beamline stack of applications as microservices in a
Kubernetes cluster. Some of the expected potential
advantages of this approach are:
•it could facilitate upgrades, thanks to the increased
isolation of each component
•rollbacks would be much e... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
887f7b9f-f434-48db-9949-a6f34725980b | and higher brilliance beam to the beamlines and new
challenges to the control system. The ALBA Computing
Division started preparing for the future requirements by
analyzing the lessons learnt from the ALBA construction
and operation as well as identifying and overviewing
cutting-edge solutions at simi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
d8d3ffd6-0e64-408a-888c-1eb2c0e06b8d | cross-platform compatible and more manageable
(isolation is done on the server placing minimal
requirements on the end-user workstation). We also look
forward to the upcoming Tango 10 version release, which
code will be refactored/rewritten in order to make it
immune to the obsolescence of libraries ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 6 |
e730e249-6030-45c0-b979-d818e2b5a3c2 | development as well as to prepare an Agent in the DCS to
represent this card. The interface of registers provided by
accelerators is described in the csv file and this file is
used as a source for an auto-generation tool capable to
build not only the Tango device server but also the Taurus
GUI, based on conda environme... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
486f4c0a-70fa-4a94-9640-b6f8f48e0086 | PyQt, Tango, etc. From the perspective of time, we
believe that it is crucial to keep the OS updated. In our
case, the lack of update in the OS conditioned many other
updates and, in the long term, generated more efforts in
workarounds than the effort of keeping it up to date. Also,
it generated a huge effo... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
311fb9b4-10ed-40e5-8f52-742f1a590269 | continuously follow and explore emerging technologies in
order to propose improvements, feel self-confident and
determined in proposing and conducting upgrade projects.
ACKNOWLEDGMENTS
All the work presented in this paper is an effort of the
ALBA Control Seccion members. We would like to
mention here: Jordi Andr... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
34267e5b-2dc7-4148-9e06-5a2ffaac9e11 | we would like to acknowledge Daniel Sanchez for his
support in the GitLab administration. The ALBA
Accelerators and Beamlines Divisions, as users of the
control system, played an important role in the controls
system upgrade projects by performing acceptance testsand provided valuable feedback. We w... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
70d51b1a-3fab-4350-aa54-2627066b74c3 | Data Acquisition Graphical User Interfaces with Taurus”, in
Proc. ICALEPCS’15 , Melbourne, paper THHC3O03.
[4]T. Coutinho et al. , “Sardana, the Software for Building
SCADAs in Scientific Environments”, in Proc.
ICALEPCS’11 , Grenoble, paper WEAAUST01.
[5]S.Rubio-Manrique et al., “PANIC and the Evolution... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
db77aacc-425f-4e5d-b8ae-1c542c8ed2c7 | [12] salsa, https://salsa.debian.org
[13] C. Pascual-Izarra et al., “Collaborative and Automated
Packaging”, 32nd Tango Meeting, Prague,
https://indico.eli-beams.eu/event/310/contrib
utions/738/attachments/547/700/CollabPkg.pdf
[14] L. Pivetta et al., “New developments for the HDB++ Tango
Archiving System”,... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXA - WEXA MC2 Invited Orals_ MC2 Invited Oral Presentations\WEXA3.PDF | 7 |
455c0229-d17f-4d5d-b5d7-17ec6e437fc5 | RF PHASE FEEDBACK AT KEK e- /e+ INJECTOR LINAC
T. Miura1,2, T. Matsumoto1,2, H. Katagiri1, T. Natsui1,2, T. Kudo3
1High Energy Accelerator Research Organization (KEK) , Tsukuba , Japan
2The Graduate University for Advanced Studies ( SOKENDAI ), Tsukuba , Japan
3Mitsubishi Electric System & Service Co., L td, T... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
b1bd571d-77f6-4e68-b727-7f56cd7f98d1 | back was introduced. The correction phase amount is de-
termined by the feedback calculation for the RF at the ac-
celerat ing structure outlet in non -injection mode (NIM)
without beam acceleration. This value is then added to set
phase as an offset phase value in each mode. This method
has stabilised the RF ph... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
7741224b-b757-455a-b37b-35442f9539fe | Figure 2 shows the RF drive system [3] in the injector
LINAC . The RF frequency is 2856 MHz, and the RF pulse
width from klystron is 4 µ s. The RF power is compressed
by SLED, then the RF is fed to four accelerati ng structures.
The low -level RF (LLRF) unit [4] receives beam mode in-
formation and RF setting p... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
451a8952-a1e0-4599-aa6d-19a5cfcb166f | Each klystron unit is equipped with an RF monitor [ 5], which measures the RF amplitude and phase of the klystron, SLED, and accelerating tube outlet for every pulse.
Figure 2: Klystron drive line using sub- booster amplifier
(left) and individually drive system (right) .
The RF amplitude is driven near the ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
affa63be-9d9e-4d29-b7a9-4ba8fb5730c2 | operation pattern s simultaneously . This paper describes t he
details of phase feedback and the operational precautions.
PHASE FEEDBACK
As the cooling water temperature changes, the resonant
frequency of the accelerating tube changes, causing a phase
shift. There are three types of accelerating structures wi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
2a2dc8dc-05d6-468c-892e-39c5fba77772 | ters are equivalent to 2.10°, 2.32°, and 2.55°. The observed
phase change of ACC is large at 5.6 deg for a change of
0.27 °C, and one of SLED is 2.9 deg. That means th e phase
shift in the accelerating structure is equivalent to the differ-
ence of them, 2.7 deg. This value is almost consistent with
the design... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 0 |
9d2b6133-8e5c-4bba-b72f-12dade6d2563 | always be corrected, even if there is no beam acceleration.
The injector LINAC has Non- Injection -Mode (NIM) that
does not involve beam injection. The phase correction
amount , 𝜑𝜑𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 , is determined by feedback calculation in
the NIM mode . As shown in Eq. (1), the sum of the RF
phase of eac... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 1 |
d01a2739-0620-4d76-a65c-558941ef0dbf | due to amplitude change caused by seasonal temperature
fluctuations, the current amplitude tolerance is set to ±2% .
Additionally, due to aging, poor contact in the coaxial ca-
bles can cause sudden changes in amplitude and phase. When this happens, the feedback stops as the amplitude falls outside the acceptable ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 1 |
086dd7b5-f94c-4177-a0c6-3e676a20118f | pickup inside the standing wave cavity. The second peak waveform of the amplitude data is the RF accumulated in the cavity that is output immediately after the input RF is
turned off. Feedback is performed using the phase information of this part. Finally , phase feedback has been
introduced to all RF units.
Case ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 1 |
e092e7e4-b9ab-4960-95f5-4ddfdfe1c05e | However, with the introduction of phase feedback, beam operation can be resumed within a few minutes after RF
on. The r esumption of beam operation in such a short time
is supported not only by RF phase feedback but also by beam energy feedback and orbit feedback.
Figure 5: Response of cooling water tempera... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 1 |
9ad9a609-5fac-427f-b00f-978c9d75cbdf | of a few minutes as it requires verification work before re-
suming operation. In this case, since the RF turns off at
only one klystron unit , there is no change in the cooling
water temperature. However, the SLED and accelerating
structures cool down, causing a significant phase change
immediately after recover... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
49996296-1fb6-435b-b949-e2ce4a15c376 | The l ong-term phase drift of the correction phase s and
the humidity are shown in Fig. 7.
Figure 7: Long- term phase drift of the correction phase and
the humidity.
The phase feedback correction amount is set to 0° at the
start of operation, so it was expected to return to around 0°
during normal operat... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
b85077ed-0214-41ba-aab6-b1e06fee06a8 | the reference signal transmission systems sent to each sec-
tor has already been reported [ 7]. The offset in the phase
correction amount raises concerns about a relative phase
shift with the beam. However, i n practice, the set phase for
each mode is adjusted regularly to ensure the appropriate phase while observi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
d7dc043a-d2cf-46a8-8277-f1d1d30a366b | whether injection into each ring is occurring. This method has made the RF phase stable in all modes without consid-
ering complex operating condit ion. The introduction of RF
phase feedback has enabled stable beam acceleration even
with fluctuations in the cooling water temperature.
A significant humidity depende... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
cd3bf44e-0e2e-4794-8d57-f0ee1318ffdd | [2] H. Kaji et al. , “Pulse -to-Pulse Modulation of Injector Linac
with Event Timing System”, 19th IEEE -NPSS Real Time
Conference, Nara, Japan, 2014, pp. 1 -5
doi:10.1109/RTC.2014.7097458
[3] T. Matsumoto et al ., “Low -Level RF System for the
SuperKEKB Injector LINAC”, in Proc. IP AC’18 , Vancouver,
Canada, ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
cf11ca21-1e98-446e-a981-43f991a26819 | Emittance, High -Current Electron Beams for SuperKEKB ”,
in Proc. LINAC’1 4, Geneva , Swizerland , 2014 , pp. 21-25.
[7] N. Liu et al. , “Measurement of the RF Reference Phase Sta-
bility in the SuperKEKB Injector LINAC” , Proc . IP AC’18 ,
Vancouver, Canada, 2018, pp. 4815- 4818.
doi:10.18429/JACoW- IPAC201... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\WEXB - WEXB MC4 Invited Oral Presentations_ MC4 Invited Oral Presentations\WEXB2.pdf | 2 |
4f0ec44d-7b8c-44f5-b67a-d32740960ffa | Outlook to Future XFELs
Dong Wang
Shanghai Advanced Research Institute, Chinese Academy of Sciences and SHINE
IPAC23, Venice, May 12, 2023
Acknowledgements: C. Bostedt , A. Brachmann, H. Braun, W. Decking, L. Gianessi . T. Hara,
T. Ishikawa, H. Kang, Y . Leng, P. Klysubun, E. Ploenjes- Palm , H. Weise, S. Werin , X. ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 0 |
de331571-5eb8-4298-a4d1-c32628b0302e | Contents
•where we are : current status of FELs in brief
•what we are requested for future: needs from scientific users
•how we are doing to prepare for future XFELs
•Electron sources: more choices
•Linac driver: more powerful than ever
•Distribution & undulators: ready for MHz beams
•X-ray sharing: must have
•... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 1 |
f5029826-834a-4330-a1e9-1f8032e67cdf | XFELs worldwide: 2000~2030
Soft X
TenderX
Hard X
Warm
Cold2000 2010 2020 2030LCLS Fermi
FLASH EXFEL
LCLS -IISXFEL
SACLAPAL
SHINE
-HE S3FELSwissFEL
SXL and …
LCLS SACLA Fermi PAL -XFEL SwissFEL SXFEL
FLASH European XFEL LCLS -II(-HE) SHINE S3FELWarm
Cold | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 2 |
d64f713f-67af-45a3-a8c5-e108986d6338 | X-ray light sources: FELs and Synchrotrons
XFEL
Right: average brightness in era of high rep-rate
Left: comparison on peak performance
not shown: short pulse/coherence…M. Dune, SLAC | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 3 |
7688f2b6-bc57-4a5f-b4a2-9ece15eb1bcc | Evolutions of FEL vs. SR ： peak and average brightness
1900 1920 1940 1960 1980 2000 2020 2040 1E40
1E30
1E20 1E10
04thGen. Syn. Light Source
3rdGen. Syn. Light Source
2ndGen. Syn. Light Source
1stGen. Syn. Light Source
X-ray tubeX-ray Free Electron Laser(XFEL)
Lower emittance... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 4 |
343493fb-a6c8-4b0c-a84c-ba503967d99b | Observations of development on XFELs in recent years
•XFEL are still advantageous on peak brightness by more than 8 orders of magnitude over the state-
of-art synchrotron radiation light sources.
•Superconducting XFELs starting from EXFEL has a clear edge over best SR sources on
average brightness at hard x- ray wavel... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 5 |
2afcddb1-ee40-47e4-bab0-8abb575187a6 | Current XFELs ：bright photon beams, less BL/ES
SXFEL: low rep-rate(50Hz)SHINE: high rep -rate(MHz)27 beamlines and 40 + end -stations
2FELs and2 of 5 end-stations 3 FELs and 3 of 10 end-stationsInstitutions XFEL facilities Accelerators FEL undulator lines In near future
DESY/ EuXFEL FLASH 1.5 GeV sc 2 @soft -X Upgrade ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 6 |
1634abc9-3aa8-42ad-837e-09b596a2b4cc | FERMI 2.0 Upgrade
Modifications to:
1.The linac -increase the beam energy up to 2 GeV, reduce wakes improve beam quality
2.The FELs : FEL -1 & FEL -2 (first stage), to exploit the advantages of Echo Enabled Harmonic
Generation vs. HGHG
3.Several methods under study/ implemented for the reduction of the pulse duration
H... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 7 |
98caebaf-ac00-40dd-9d0f-6df80a2f74db | FERMI 2.0 Expected performances
9
Spectral rangePeak power vs. photon energy
FERMI Status and perspectives, see poster TUPL048 (E. Allaria , G. Penco )
FERMI 20 Linac Upgrade, see talk TUODC2 (N. Shafqat)
Sensitivity studies of FEL -2, see poster TUODC2 (F. Sottocorona –E. Allaria )
Upgrade of FEL -1 to EEHG, see poste... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 8 |
3f9890a9-3840-456a-a44a-b24ff3501f09 | SwissFEL experimental stations
Athos
Maloja
Furka
Alvra
Bernina
Cristallina
M: Mirror
DCM: Double -Crystal Monochromator
CRL: Compound Refractive Lens
KB: Kirkpatrick -Baez MirrorDiavolezza
(in preparation)Attosecond and
nonlinear X-ray
science
Atomic , molecular and
nonlinear X-rayphysics
and chemical dynamics
Ultrafa... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 9 |
07973d97-989e-42c9-ad4e-d1befcdcc2b7 | 20 ×(3+1) m undulator modules
≈100 m undulator line
(total,with large chicane)Space for RF and
beam manipulation devices
(active and/or passive)Beam dump
(already
installed)Preliminary plans for a third undulator line, dubbed “Porthos.”
Firmly anchored in the Photon Science Roadmap (published
2021) and the Swis... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 10 |
8ad0c05e-5c3a-4474-8954-d5dd31ddde9e | Synchrotron + XFEL light source combinations
Linac for full -energy injector of synchrotron can be XFEL driver, vice versa
Tohoku Light Source and SXFEL SPS- II light Source and FEL
3 GeV linacSXL –Soft
X-ray LaserMAX IV
1-5 nm
1-30 fs
100 Hz
ID Apple-X 20x2m3 GeV ring
1.5 GeV ring
Delayed and changedCourtesy: S. W... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 11 |
c54dc2b2-9aaf-4754-82d1-810c49b1e861 | The SXL (Soft X-ray Laser) project
•Based on the existing 3 GeV MAX IV linac
•Phase 1 SASE, phase 2 Seeding, ultra short pulses
•Compact Apple X undulators : full polarization control
•2 beamlines : Pink + Mono (+ two open ports)
•Pump laser ( THz to XUV) , HHG for the pink beamlineA SWEDISH USERS INITIATIVE
Knut and A... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 12 |
dab236b4-b1e2-453d-9828-96d80c463779 | Split undulator scheme
Short undulators (20x2 m)
Strong chicanesHBSASE
@IPAC23 MOPM110 –APPLE X undulators
THPL022 –Virtual diagnostics
THPL136 –Long diagnostics, TDCSXL
extension
Apple X undulator
Francesca Curbis, Lund University, MAX IV, Sweden | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 12 |
9a83b0b2-0ce0-481f-a52e-78f5b43d4d56 | Questionnaire on future XFELs : needs from scientific users
Specify your end -station e.g. AMO ，CDI, SSS, XPCS, HED …….
Important FEL characters (may add others) Now Desired Priority
# of photons per pulse typical 1E12~1E13 / 1E8, 1E10, 1E12, 1E14,…..
FEL pulse length ~10 fs Sub-fs, ~1fs, long pulse
polariza... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 13 |
2f4f03f7-c574-42f4-905f-f03a93e6502c | Brief summary of needs from scientific user community
•Sigle pulse performance: achieved in existing XFELs
# of photons per pulse: typical 1E12~1E13 / pulse ( some for a few mJ)
FEL pulse length: ~10 fs, some for ultra -short
others: temporal coherence, polarization control, two- color, etc.
•Multiple pulse perfor... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 14 |
a89a8a52-919d-46e6-b2f4-777531f6bdbf | Key techs for large sc-linac based XFELs
EXFEL
LCLS -II
SHINE
PITZ gun
by DESY Zeuthen
186MHz VHF gun
by LBL
217MHz VHF gun
+ L-band gun, by THUTESLA module, pulsed
by DESY
TESLA module, CW
by FNAL+JLAB
TESLA module, CW
by SHINE
Warm/SC undulator
by SHINEWarm H/V polar.
by ANL/LBLWarm undulator
by DESY/EXFELGun Accele... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 16 |
d0c74272-a887-4cd1-b338-6365b005f211 | Rep-rate： 50~120Hz 1~10kHz (eq.) ~1MHz 1~10 MHz 1~100 MHz
Origins： SLAC -BNL.etc DESY -Zeuthen LBL Peking U. Multi- lab-uni.
Bunch charge ： 100~1000 pC 100- 1000pC 50~100pC 20pC~100pC 10~100 pC
Cathode: Copper Cs2-Te Cs2-Te bi alkali metal/semiconductor
Operation mode ：high pulse E high pulse E high rep... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 17 |
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