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4601fbe7-9e8a-4315-9101-b5cddb3b5ff6 | Rep-rates and pulse structures of XFELs
Warm XFELs ~100 Hz
LCLS, SACLA, Fermi,
PAL, SwissFEL , SXFEL
SC XFELs, pulsed ~3000x10 Hz
FLASH, EXFEL
SC XFELs, cw ~1 MHz
LCLS -II, SHINE
Future XFELs MHz+ kHz+X
Upgrades and new projects~10 ms 0.1 ~ a few mJ
~100 ms(macro)
~200 ns (in -pulse) 0.1 ~ a few mJ
~ 1 us
0.1 ~ mJ
~... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 18 |
b5148832-cfb6-48da-b79c-557f1b74b09a | Multiple injectors for high rep-rate XFELs: meet different needs
•L-band gun:
~10 kHz beam, excel. emit. @10- 1000pC
EXFEL(PITZ), SHINE(even -spacing)
•VHF gun:
MHz beam, good emit. @50- 100pC
LCLS -II(186MHz), SHINE(217MHz)
•SRF & DC gun:
~10 MHz beam, good emit. @ 10- 100pC
R&D for future, EXFEL/LCLS -II(SRF)... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 19 |
6e3b977d-9d0f-4d17-b203-40cde01079d5 | Hans Weise, FEL2019
Huge success of European XFEL has greatly inspired LCLS -II and SHINE | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 20 |
cda89518-c05a-42bb-98ee-9fbebb89fd06 | New technologies make LCLS -II or other new XFELs feasible
Critical development to reduce cryogenics
Q0’s of >3x1010can consistently be produced
Gradients increased to 20 then ~30 MV/m recently•All cavities for LCLS -II are produced with
nitrogen- doping and other new recipes
•Q is improved by 2 mechanisms:
•Higher st... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 21 |
2f11878a-0f0d-4921-a23d-fc5f7c812870 | Cavities for LCLS -II-HE and SHINE and potentially other cwXFELs
Performance of latest SHINE cavities
Courtesy: J. ChenAvg Qo: 3.0 E10
Avg grad.: 26.4MV/m
Impacts of new processing techniques on future XFELs:
1, Lowering cryogenic consumption resulting energy saving
2, Less number of cavity/mod... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 22 |
206e14d9-0946-4e13-8941-fe3a4c4374d9 | Cryo -plant capacity and dynamic heat load of linac cavities with different Qo
LCLS -II
SHINE -cdr
-SHINE：12kW@2K plant (8 GeV and higher ）
-LCLS -II-HE：8kW@2K （8 GeV beam ）
-LCLS -II：4kW@2K （4 GeV beam）LCLS -II-HE
SHINE nowFuture cw
XFELsFor cwXFEL: High Q0(~3E10) is needed and achieved
New trends: ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 23 |
67c529d3-74aa-4cbf-bbe4-ae021a5af511 | Driver for future XFELs ：powerful cwsuperconducting linac
LCLS -II 4 GeV cwLinac : progressing quite well SHINE cw gun/ linac testbed under commissioning since 2022
A. Brachmann , May 8, IPAC23 Beam test with DC- SRF cwgun and an 8 -cavity cryomodule | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 24 |
7343e937-2a9f-4d68-a137-f98743eb74ff | Tunnels, cryo-plants, fast beam distributions… all feasible
SHINE linac tunnel LCLS -II 4kw@2K cryo -plant SHINE 4kW -CP 2K CB
Deeper than EXFEL’s Working fine, A. Brachmann’s talk under installations | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 25 |
0864ebe4-5196-4599-9c62-4338c75001ec | <1200mm <1200mm1500mm
1000mm
600mm1900mm
1 FEL / 4.5m tunnel ，EXFEL
2 FELs / 6m tunnel ，LCLSII/SHINEThought for future XFELsIncreasing numbers of FEL lines per underground tunnel
4 FELs / 6m tunnel. With e.g.
double-wing V-gap undulators6 FELs / 6m tunnel. With e.g.
stackable H-gap undulators
Prototype studies of
fr... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 26 |
596b91af-e41b-4450-98ac-e23248423dd6 | 28Station A
Station BStation C
Crystal method, e.g. Y . Feng, et al., Journal of Synchrotron Radiation, Nov. 2014 Defecting mirror method, R&Ds at many XFELs and new project S3FEL.
• The existing LCLS -II-HE accelerator will be sufficiently powerful to feed 10 undulators
• Expand LCLS from 2 beamlines to ~10, and thu... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 27 |
25d04427-d199-4f4f-88de-c30e84cb7c34 | ①自由电子激光主体建筑
②高频束流测试大厅
③超导高频测试组装大厅
④低温大厅 A
⑤低温大厅 B与公用设施 A
⑥公用设施 B
⑦科研楼New project on horizon: S3 (Shenzhen Superconducting Soft) XFEL
1stXFEL as major facility of a science lab (no SR yet)
Build for tens of instruments working simultaneously
Soft x -ray, 1.8 km length, spacious design, see below
Fully supported b... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 28 |
6873bf38-8811-4188-86fe-fdaee80e95fe | Bring XFEL and intense laser together to explore new physics
23 210 W/cm
18 210 W/cm
14 210 W/cm
Atoms and
moleculesRelativistic interaction,
plasma100PW
New science
QED plasma
QED vacuum
激光聚焦光强
G. Mourou and T. Tajima
Interaction Region chamber for
SEL End -station at SHINE L. Helary , EPS-HEP Conference 2021
Y. ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 29 |
feb34d32-c539-43d2-a19a-785638ba1ad6 | Dark SHINE —— Afixed -target experiment forDark Photon search with SHINE high
repetition ratesingle electron beam courtesy: S. Li, SJTU
Dark Photon iswidely regarded as
oneofthepromising portals to
Dark Matter inthecontext of
particle physics theory.
More sensitive inthelowmass
region, complementary tothe
direct Da... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 30 |
59219c13-2c16-42b1-b9ec-2622731974a2 | Summary
•Eight operating linac-based XFELs are working well. Active programs going on to further improve
FEL performance on many aspects, especially on temporal coherence and ultra- short pulses.
•More synchrotron- XFEL complex sharing the same linac for energy saving like SACLA or as the
initial design choice ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 31 |
a920ef10-d8ef-4ed3-ac38-84d63b8598a8 | 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
ColdThank you for your attention! | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC02.3 - Photon Sources and Electron Accelerators (Invited)\FRXD2_talk.pdf | 32 |
51859712-b608-4d74-b4ad-49a08b57d691 | COMMISSIONING AND OPERATION OF THE SPIRAL2 SC LINAC
A.K. Orduz∗, P-E. Bernaudin, M. Di Giacomo, C. Jamet,
J-M. Lagniel, G. Normand and A. Savalle
Grand Accélérateur National d’Ions Lourds (GANIL), Caen, France
D. Uriot, IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
Abstract
TheSPIRAL2 linacisnowsuccessfull... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
dd38f948-b619-465c-b494-edd08cad4ffa | rebunchersand26linac SCcavitieswereprogressivelyim-
provedtoreachthenominalparametersinoperation,starting
from the classical “signature matching method”. The dif-
ferent cavity tuning methods developed to take into account
our particular situation (very low energy and large phase ex-
tension) are described. The tools d... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
41ca236d-7cf3-4a56-a0be-6c238f0dab9b | plinary topics such as materials irradiation, nanostructuring
and radiobiology. These beams are also used to irradiate
electronic components and polymer membranes [2]. In con-
trast to the original GANIL facility comprising 5 cyclotrons
in operation since 1983, the SPIRAL2 linear accelerator
started delivering beams in... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
09bcfef6-f85e-4953-bb22-eba88fecef36 | (SBS)usedforNFSexperiments[6]. TheSClinacisdivided
intoalow 𝛽(0.07)andhigh 𝛽(0.12)section,thefirstone
composed by 12 cryomodules, each containing 1 quarter
wave resonator (QWR) designed by CEA and the second
onecomposedby7cryomodules,eachcontaining2QWR
∗angie.orduz@ganil.frdesigned by CNRS [7,8]. A global layout of S... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
ea5a6da8-1f56-49a2-b593-2cb36b03edf1 | SPIRAL2 . The4thcolumnincludestheparametersofthe
new injector NEWGAIN which is in the design phase and
is described later in this paper.
Table 1: SPIRAL2 Beam Specifications
Parameter 𝐻+𝐷+𝐴/𝑄 ≤ 3 𝐴/𝑄 ≤ 7
A/Q 1 2 3 7
Max I (mA) 5 5 1 1
Max E (MeV/A) 33 20 14.5 7
Beam power (kW) 165 200 45 16
Thelinaccommissioningw... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
3ab365d9-838a-40a1-b9a4-b30db79bf79d | SPIRAL2 canoperateatitsfullpowerof165and200kW,
respectively[1,14]. Losseswerestudiedandcontrolledby
monitoring the 27 Beam Loss Monitors (BLMs) located
alongthelinacandHEBTasshowninFig.1. Inaddition,
the beam losses were controlled bydifferent measurements
suchasthetransmissionwithACCTandDCCT,thevacuum
pressurevariatio... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 0 |
aeeb14f7-f8ef-4189-abd7-c271327740ca | Figure 1: SPIRAL2 SC linac layout.
celeration. Finally,thesecondpartdescribestheoperation
timetable in 2022, the development of applications to op-
timize the tuning procedures and the latest cryogenic and
diagnostics systems improvements.
SPIRAL2 COMMISSIONING
TheSPIRAL2 commissioning was successfully com-
pleted in 2... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 1 |
1c9c4491-2c46-4bc7-a5d3-6e531d4f5f3b | tuning strategy for operation has been improved since the
commissioning and is now based on three methods. The
first one, the ”advanced method”, is an evolution of the
classical”signaturematching”methodincludingimprove-
mentstoavoidenergydeviationinducedbythenon-linear
effects previously observed [12,16]. Then, the fol... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 1 |
0b7c34c9-9eba-4849-824d-833a433f2373 | 𝐶 =𝐴2/𝑄2
𝐴1/𝑄1
where𝐴1and𝑄1are the mass and the chargeof the refer-
ence ion and 𝐴2and𝑄2those of the new one.
Thetuningusedasreferencein2022wasa5mA 𝐻+beam
at33 MeV. From there, 𝐷+,4𝐻𝑒2+and18𝑂6+beams were
tuned and accelerated using the ”with-reference method” to
40 MeVand7 MeV/A, respectively. Finally, st... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 1 |
9689962d-9ca4-4c87-8a56-3acd00e7953d | the expected ones for18𝑂6+beam as shown in Fig. 2.
Transverse rms emittance measurements were 0.32and
0.46 𝜋.𝑚𝑚.𝑚𝑟𝑎𝑑 in the horizontal and vertical planes, re-
spectively. The Courant-Snyder parameters are in good
agreementwiththereferencesimulationinTraceWin(see
Table 3) [18].
Figure 2: Transversal phase space... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 1 |
e708905b-1fcf-408f-8054-4f862cf2324c | Table3: MEBTSimulatedandMeasuredCourant-Snyder
Parameters for 0.7 mA18𝑂6+
Parameter Sim Meas Δ(%)
𝛼𝑋,𝑋′ -0.83 -0.99 19
𝛽𝑋,𝑋′(mm/𝜋.mrad) 3.44 3.40 1
𝛼𝑌,𝑌′ -0.29 -0.49 69
𝛽𝑦,𝑦′(mm/𝜋.mrad) 0.32 0.38 19
7 MeV/A ,18𝑂7+and40𝐴𝑟14+beams were then accelerated
uptothesameenergy. Themeasuredlinactransmissionwas
... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 2 |
bcd02239-7910-40a0-918a-6130aa5aeeca | LBE1. After the particle switch without modifying any
parametersinthelinac,a 78µA(peakcurrent)18𝑂7+beam
was accelerated up to 7 MeV/A as expected with a 1hduty
cycle. The measured transmission was only 95% due to
the fact that no transport optimisation wascarried out after
theswitch. Thesameprocesswasrepeatedtoswitchf... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 2 |
eec02737-4df5-4008-ae0c-3e788f55c649 | Thebeamtimeof SPIRAL2 in2022wasapproximately
3months,startingonAugust28andendingonDecember
12. Sevenphysicsexperimentsandthreemainpreparatory
studies for 𝑆3were conducted. Figure 5 shows the beam
time distribution. The time for physics experiments repre-
Figure 4: Power ramp up of 80 µA40𝐴𝑟14+beam: Trans-
mission (r... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 2 |
ab1a12e3-d58d-41d2-8831-90d30aa7e29f | Figure 5: SPIRAL2 beam time sharing in 2022.
Concerning the 16.5% of the total time used for ma-
chine studies, 75% was used for beam dynamics studies
with4𝐻𝑒2+,𝐷+,18𝑂6+and40𝐴𝑟14+beams. Tests were
performed on: i) validation of the new reference and A/Q
tuning methods as well as the implementation of the related
... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 2 |
a70cf805-563a-4686-b18e-6959f759e1d0 | the magnets up to the experimental room. Finally, a general
alignment is done before delivering the beam again. The
application is currently being developed to be used this year.
Preliminary results from the third study also showed that
SPIRAL2 candeliverthebeamintheeventofcavityfailure | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 2 |
e53228f7-9ce7-4e95-84a9-5a37c10c515b | in the high 𝛽section. In the case of low 𝛽cavity failure the
beam transport without losses is impossible, then the tun-
ing is very difficult at low energy due to a high debunching
betweentwo cavities. As the energyincreases the debunch-
ing decreases, so if one of the last low 𝛽cavity fails, it is
easier to recover... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
6978e759-d15e-4be7-8b64-14f352deb713 | production of quasi-monoenergetic or continuous spectrum
neutron beams and iii) neutron beam induced reactions and
activation. TheNFScommissioningstartedthesameyear
astheacceleratorcommissioningwithsuccessfulmeasure-
mentsofproton-inducedreactioncrosssectionsandneutron
beam characteristics. At the next stage, the resul... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
73c67380-fc5e-4605-b6c9-59a2187275ee | determine the masses of the fragments successfully.
Accelerator Subsystems Issues and Improvements
Themostrelevantdevelopmentsandaspectsofcryogenic
systems,beamdiagnostics,MEBTbeamdumpenhancement,
as well as the latest RF observations are discussed below.
Thermo-acousticoscillations(TAO)wereidentifiedlate
in2017ineachc... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
b30c8e1f-8962-4607-ad6f-b33a3516bdcb | micrometerneedlevalve,inductancebyalengthoftube,and
capacitance by a helium storage volume. The new system
was testedduring the 2022 accelerator run and performed
satisfactorily [21].
The development of a numerical model of the cryogenics
system is an ongoing project which started in 2017 as a
collaboration with CEA DS... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
180b159a-d6ba-40bc-8fd1-a2f33af612a5 | in the cryogenics’ PLCs, has been tested during 2022. In
particular, it helped to pinpoint a powerful field emission
phenomenonincavity#14duringthe2022run,thusproving
its usefulness. Developments are still ongoing in order to
enhance the precision and the speed of the soft sensor.
A new electronics for the distribution... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
ca6482a9-9c74-4da1-a32f-accf944ee0c1 | alsousedtoautomatetheelectronicscalibration. Thecali-
brationofaBPMmodulecanbedoneremotely,byinjecting
4 identicalsignals in amplitude and phase into the 4 inputs
of a BPM electronics, thanks to two Calboxes that can be
connected to the frames. Calibration of all BPMs was re-
ducedfromoneweektothreedays,comparedtoprevi... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
7e3deebc-b402-4b91-a3e6-568f65e90ae8 | rent offset [22].
X-rayemissionshavestartedfrom2020incavities#2(low
𝛽section) #14 and #26 (high 𝛽section). No modifications
havebeenmadetocavity#2asitsvoltageislowanditisop-
erating without problem under normal conditions. However,
thevoltageofcavities#14and#26hadtobereduced(<8%)
in order to run then reliability. To ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 3 |
190dfdd3-2630-4744-b6bc-581500369a5b | the start-up of physics, and the detection system commis-
sioning are planned in 2024.
Thelow-energybeamexperimentalroom“Decay,Exci-
tation and Storage of Radioactive Ions” (DESIR) will be
built in the next few years and will use ion beams from both
GANIL/SPIRAL1 andSPIRAL2 facilities [24]. Nuclear
physics, fundamental... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
450e9205-b255-4e85-8cf2-8bd8489cd44a | preliminarydesignstudyphasewascompletedinJune2021
and the project is currently in the detailed design study
phase [25]. The injector will be located in an existing cave
in the SPIRAL2 building as shown in Fig. 6.
Figure 6: SPIRAL2 NEWGAINinjector.
CONCLUSIONS
TheSPIRAL2 SC linac has been running successfully
in 2022, d... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
86b12b87-672f-486c-a4bb-24b2b2d152e3 | 25./zero.alt46/zero.alt41/zero.alt41
[2]H. Goutte and N. Alahari, “Microscopes for the Physics at
theFemtoscale: GANIL-SPIRAL2,” NuclearPhysicsNews ,
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1881363.
[3]O. Kamalou et al., ”Status Report on GANIL and Up-
grade of S... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
80364c4e-a89e-465c-ba86-5fac8bd89a81 | [5]R. Ferdinand et al., “Final Results of the SPIRAL2 Injector
Commissioning,” in Proc. 10th Int. Particle Accelerator Conf.
(IPAC’19) , Melbourne, Australia, May. 2019, pp. 848-851.
doi:1/zero.alt4.18429/JACoW-IPAC2/zero.alt419-TUPTS/zero.alt4/zero.alt47.
[6]M. Di Giacomo et al., “Proton beam commissioning of the
SPIR... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
174c5c5e-0fb5-4efb-b523-e7423fe5f7ed | 967-972. doi:1/zero.alt4.18429/JACoW-SRF2/zero.alt415-WEBA/zero.alt44.
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[10]A.Drouart etal.”TheSuperSeparatorSpectrometer... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
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JACoW-LINAC2/zero.alt422-TU2AA/zero.alt42.
[13]X.Ledoux etal.,”Firstbeamsatneutronsforscience” Eur.
Phys. J. A , vol. 57, pp. 257, 2021. doi:1/zero.alt4.114/zero.alt4/epja/
s1/zero.alt4/zero.alt45/zero.alt4-/zero.alt421-/zero.alt4/zero.alt4565-x
[14]A.K.Ordu... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
14383a0a-6fe2-4620-b176-40ceb2037367 | [16]T.L.Owens etal.,“Phasescansignaturematchingforlinac
tuning,”in Proc.17thInt.LinacConf.(LINAC94) ,Tsukuba,
Japan, Aug. 1994, pp. 169–179.
[17]G.Normand etal.,“StrategiesForSPIRAL2LinacHeavy-
Ion Beam Tuning,” presented at the 14th Int. Particle Accel-
eratorConf.Conf.IPAC’23),Venice,Italy,May2023,paper
TUPA192,this ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 4 |
35542ef0-0081-4d28-8af8-3077176ece7d | [19]S. Panebianco et al., ”FALSTAFF/ a novel apparatus for fis-
sion fragment characterization” EPJ Web Conf. , vol. 69, pp.
00021, 2014. doi:1/zero.alt4.1/zero.alt451/epjconf/2/zero.alt41469/zero.alt4/zero.alt4/zero.alt421
[20]First experience with FALSTAFF at NFS, GANIL,
https://www.ganil-spiral2.eu/2/zero.alt423//ze... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 5 |
34416278-faf0-422c-a72e-e8090e49d258 | Measurements,” presented at the 14th Int. Particle Acceler-
ator Conf. Conf. IPAC’23, Venice, Italy, May 2023, paper
THPA043,this conference.
[24]DESIR, GANIL, https://heberge.lp2ib.in2p3.fr/
desir/-Description-of-the-DESIR-facility-
[25]M.H. Moscatello et al., “NEWGAIN project at GANIL-
SPIRAL2 : design of the new hea... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3.pdf | 5 |
185feef9-d3d6-45bf-8448-17b290867a26 | Angie Orduz
Accelerator physicist, GANIL
On Behalf of SPIRAL2 Accelerator Team | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 0 |
49003821-5546-45cb-a428-ac588ca3b974 | Introduction
Commissioning
First year of operation
Future perspectives
Summary
Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 2 12/05/2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 1 |
03b3b153-3cba-4e4f-bd1d-d5ae890795b9 | GANIL research activities theoretical
and experimental aim to respond to:
How was matter created in the
universe?
How do neutrons and protons
interact, making up the nucleus of
the atom?
What are the limits to the existence
of matter?
What are the rules governing the
so-called magic nuclei ?
Angie Orduz Com... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 2 |
31f7c0e7-aa5c-4aec-ae68-fae53dcfb72f | GANIL research activities theoretical
and experimental aim to respond to:
How was matter created in the
universe?
How do neutrons and protons
interact, making up the nucleus of
the atom?
What are the limits to the existence
of matter?
What are the rules governing the
so-called magic nuclei ?
Angie Orduz Com... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 3 |
47cccdb3-5a8c-472d-8568-c7bf037afa18 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 5 12/05/2023
SBS
ECR A/Q3
ECR H+/D+ Cryogenic distribution system Low section (0.07) High section (0.12)
RFQWarm section NFS (converter cave)
S3 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 4 |
51a1149d-0c0a-4e11-9692-8f1702bb7d7e | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 6
12/05/2023
D-plate
LEBTMEBT RFQ LINACECRIS
A/Q=3
1mAECRIS
H+, d+
5 mA
NFS
S3Beam Dump
2006 2009 -2012 2014 -2018 2022 2019 -2021Project start
CEA-CNRS
Detail study 2006 -2008
Process construction and
validation in partners lab
2006 -2012Q... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 5 |
8475b8e2-8ba5-4920-a816-e34cbdac18a7 | Authorization to operate SPIRAL2,
Jul 8th, 2019
1stbeam in the linac, Oct. 28th
1stbeam in NFS, Dec. 11th
Characterization and first
experiments in the NFS room
33MeV H+(2019)
40 MeV 4He2+,D+ (2020)
50 µA D+NFS ( 2021)First year of SPIRAL2
operation in NFS room
50% time for physics
Pre-commissioning for S3
7 MeV/A18... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 5 |
00e59ee1-1d41-457d-b1ce-fc821928820f | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 7 12/05/2023
Strategy power ramp up: energy,
intensity and duty cycle.
H+, D+and 4He2+were accelerated
to their nominal values.
The beam power ramp up with H+
and D+beams demonstrate the
reliability of the linac.
H+, 16 kW , 12 ms, 1 Hz,... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 6 |
60259990-8d5c-4efe-8558-98f2d2fa8ed5 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 8 12/05/2023Validation with earlier performances at the partner labs after at least 4 years of storage (vacuum). Nominal gradient
6.5 MV/m except for cavity #24.
He bath pressure regulation <±5 mbar for all cavities with full RF power.
Th... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 7 |
187958d7-459a-42ba-b0ec-bb79e2c1349f | Angie Orduz Commissioning and Operation of the SPIRAL2 SC LinacIPAC’23 9 12/05/2023
∆𝜑=𝜑𝑒_𝑟𝑒𝑓−𝜑𝑖𝑛_𝑟𝑒𝑓−𝜑𝑐𝑎𝑣_𝑟𝑒𝑓
𝜑𝑐𝑎𝑣=𝜑𝑒−𝜑𝑖𝑛−∆𝜑
𝜑𝑒−𝑐𝑎𝑣2=𝜑𝑒_𝑐𝑎𝑣1−𝜑𝑠ℎ𝑖𝑓𝑡𝑐𝑎𝑣1+𝐷𝑟𝑖𝑓𝑡
1.Advanced method (1-2 days)
•Signature matching + avoid the phase measurements errors (non-linear effect... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 8 |
2544ab0e-2ee2-437a-860c-2d225107c597 | •Heavy ions at low energy for S3
•If the current measured is <10µA => BPM will be blind !
•A “pilot ion” with a “visible” current and the same acceleration pattern than the one
needed for the “objective ion” should be adjusted first .
•All the 𝐸and 𝐵fields will be multiplied by 𝑐=𝐴2/𝑄2
𝐴1/𝑄1
•Injection tuning ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 8 |
bef06174-587d-4b74-b257-b2d254e752c7 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 10 12/05/2023
7.8 mKey to longitudinal matching in the linac.
•“With-reference method” =>no upstream phase measurement.
•“Advanced method ” => not work correctly for 1strebuncher (phase measurement error).
•Zero-Crossing tuning method: Rebunc... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 9 |
71f1fb08-63da-414c-8902-1d4ddee9e3ef | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 11 12/05/2023
Reference simulation 600 µA 18O6+Measurement 600 µA 18O6+
Transverse rms
emittance
measurements fora600µA18O6+beam .
•0.32𝜋.𝑚𝑚.𝑚𝑟𝑎𝑑inhorizontal plane
•0.46𝜋.𝑚𝑚.𝑚𝑟𝑎𝑑invertical plane | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 10 |
dfe6b93a-591e-4d6a-a4ba-6a45f29b1845 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 12 12/05/2023
50 μA18O6+ :beam: Duty cycle (blue ) and
average current (red).80 μA40Ar14+ :beam: Beam power (blue ) and
transmission (red ).
A/Q method test
•The“pilot beam”;18O6+=>A/Q= 3,easy toproduce with a
current >100µA,good stability .
... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 11 |
0a1e3952-faf8-4c58-a356-3dc78f5e8da1 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 13 12/05/2023
0 5 10 15 20 25 30 35 40 45
0 5 10 15 20 25 0 1 2 3 4 5 6 7 8dphi (deg)
dW/W (%)
z (m) from CMA01 to CMB07dphi and dW/W envelopes (z) Win = 1.46366 MeV Wout = 36.6705 MeV Erms = 0.13 E100% = 1.6 pi.deg.MeV
A/... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 12 |
ee2ccefd-27b4-4292-a034-ba5e8864195a | recover a beam dynamics without
losses .
Retune the up and downstream cavities
required phase acceptance
reduction of the linac final energy or
increase the cavity voltages .
•low 𝛽cavity failure : very difficult
tuning at low energy due to a high
debunching between two cavities.
Work is currently underway an... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 12 |
a2957024-3569-4a6d-be55-27e6d5040293 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 14 12/05/2023
Low section High sectionEnergy of a D+beam after
cavity #14, 12.72 MeV
Beam energy
change
Several energies for1experiment .
Manual switching (process timeE).
Two methods were tested=>losses
study/define aprocedure/appl... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 13 |
d0e725aa-bfe0-4aca-a01f-9c3d99899514 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 15 12/05/2023
Thebeam time wasin20223months
7experiments and3main preparatory studies forS3were
conducted .
76%ofphysic with𝐷+beams :
9μAand47μAonthetarget ,1/100(SBS) .
𝐻+,𝐷+and4𝐻𝑒2+from 10MeV/A uptotheir nominal
values .
Tuning tim... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 14 |
5193369e-7d73-47eb-8b5f-320c8950519d | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 16 12/05/2023
SBS beam dump
•Current measurements had an offsetof ≈ 100𝜇𝐴in 2019.
•The beam dump receiving the bunches deviated by the SBS (≤ 7.5 kW) was
affected by Coulomb scattering => important heating degradin g the beam current
mea... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 15 |
17f02bb9-af8f-4cd4-bf8c-a6466dd7d664 | •These frames are also used to automate the electronics calibration. The calibration of a BPM module can be done
remotely, thanks to two Calboxes that can be connected to the frames.
•Calibration of all BPMs was reduced from 1 week to 3 days, compared to previous calibrations.M. Di Giacomo et al., “Upgrade of the med... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 15 |
a05ec315-6781-4472-ab22-847396bc3a54 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 17 12/05/2023
Cavity X
-
ray emissions
•X-ray emissions have started from 2020
in cavities #2 (low 𝛽section ), #14 and
#26 (high 𝛽section).
•No modifications have been made to
cavity #2 as its voltage is low and it is
operating witho... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 16 |
58cf73f5-3253-4687-96d6-b7f16476c061 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 18 12/05/2023
Cryogenic system
Thermo
-
acoustic oscillations (TAO) were identified late in 2017.
•The pressure oscillation => strong to prevent the use of SC.
•Temporary solution => restored the cryogenic system stability
=>drawbacks (peri... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 17 |
74d9cc78-4437-4aa9-b3f1-fa7f0fe7e438 | control valves positions.
•Implemented in the cryogenics’ PLCs, has been tested during 2022.
•Pinpoint X field emision in cavity #14 during the 2022.
•Developments are still ongoing => precision and speed.
A.Ghribi et al., “Cryogenic thermoacoustics in the SPIRAL2 LINAC,” Cryogenics ,
vol. 124, pp. 103487, 2022. doi... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 17 |
95868ea7-85a1-416f-9c69-e6e56cd8f5ae | Preliminary proposition
Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 19 12/05/2023
Year
Operation
GANIL
SPIRAL2ASOND2023 2024 2025
FMAM JJ ASONDJ FMAM JJ ASONDJ JFMAM JJGradual increase ofbeam time with
parallel operation ofGANIL and
SPIRAL 2.
Commissioning ofS3experimental
room in2024... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 18 |
0e287aef-0bc8-41a8-9ef7-053617a5d9e9 | 20 Angie Orduz Commissioning and Operation of the SPIRAL2 SC LinacIPAC’23 12/05/2023
DESIR (D ecay,
Excitation and
Storage of
Radioactive
Ions)
•Low Energy beam experimental room.
•Nuclear physics, fundamental weak -interaction and astrophysics.
•Built in the next few years and will use ion beams from both GA... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 19 |
fd81bc68-fbb9-401d-a51b-077732fa1191 | 21 Angie Orduz Commissioning and Operation of the SPIRAL2 SC LinacIPAC’23 12/05/2023
NEW
GAnil
INjector
•Design, construction and commissioning of a new injector to produce and deliver particles with 𝐴/𝑄≤ 7 to the SC linac
started on May 2020.
•The preliminary design study phase was completed in June 2021
•Th... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 20 |
2616b4de-b792-43a3-9b4a-c41018edd7b4 | 22 Angie Orduz Commissioning and Operation of the SPIRAL2 SC LinacIPAC’23 12/05/2023The
4 commissioning phases were
completed in time to start full operation in 2022 .
The
SPIRAL2
SC
linac was
successfully commissioned with H+, D+and 4He2+ beam.
The
SPIRAL2 SC
linac has been
running successfully in 2022... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 21 |
f0ecc43f-fdf5-41e3-a9f5-e0bc7fbc42b1 | Angie Orduz Commissioning and Operation of the SPIRAL2 SC Linac IPAC’23 23 12/05/2023Thank you for your attention | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC04.3 - Hadron Accelerators (Invited)\FRXD3_talk.pdf | 22 |
18bb0a6f-6639-47a3-9e5d-656803c58381 | IPAC 23, May 7-12 2023
Coherence in High Gain FELs:
from Electron Intrabeam Scattering
to Quantum Effects
Giovanni Perosa
Elettra Sincrotrone TriesteUniversità degli Studi di Trieste | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 0 |
f6ba0758-5f0a-4978-ac81-77ddb9b351be | IPAC 23, May 7-12 2023
Outlook
•What do we mean when we talk about coherence?
•Introduction to Free Electron Lasers
•Impact of collective effects on the coherence
•Beyond the classical coherence? | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 1 |
59c29b6a-c301-4ee6-bb9b-2854c53fafd3 | IPAC 23, May 7-12 2023
What do we mean with ‘Coherence’ ?
Interference patterns for two
identical Gaussian light pulses.
Intensity profile for the same
pulses when varying theirspatial separation from 0 (overlapped) to 1 mm (horizontally)Transverse (Spatial) CoherenceLongitudinal (Temporal) Coherence
Soft X-Rays and Ex... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 2 |
38a0ff30-fd29-4f23-97bf-e705285077c0 | IPAC 23, May 7-12 2023
Measurements of coherence
source
detector 1detector 2
C
dascreen
sourceFirst-order correlation functionPhase correlation or first-order coherenceIntensity correlation or second-order coherence
Young InterferometerHBT InterferometerSecond-order correlation function
What about orders higher than 2... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 3 |
56c317db-a2dd-437b-8c71-67173d799ed5 | IPAC 23, May 7-12 2023
The importance of being coherent
Diffractive imaging
Holography
Phase
retrievalReconstructed
imageOriginal
image
H. N. Chapman et al., Nat. Phys. 2, 839 (2006)
F. Capotondi et al., Rev. Sci. Instr. 84, 051301 (2013)
FLASH FERMI | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 4 |
19ea5e63-b52f-4f4e-b739-20698a88b50c | IPAC 23, May 7-12 2023
The importance of being coherent
Diffractive imaging
Holography
Phase
retrievalReconstructed
imageOriginal
image
H. N. Chapman et al., Nat. Phys. 2, 839 (2006)
F. Capotondi et al., Rev. Sci. Instr. 84, 051301 (2013)
FLASH FERMI | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 5 |
e4d923d1-aa9a-4ff3-9381-4867ed714286 | IPAC 23, May 7-12 2023
The importance of being coherent
Diffractive imaging
Coherent Control
Holography
Phase
retrievalReconstructed
imageOriginal
image
-10-50510Asymmetry (%)
12 10 8 6 4 2 0
Relative phase (rad)
Total field
1rst and 2ndharmonic
fields with controllable phase
K. Prince et al., Nat. Phot. 10, 176 (2016... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 6 |
cb1a904b-6caa-47c0-b274-17701ffe687b | IPAC 23, May 7-12 2023
Free Electron Lasers
3 ingredients:
Undulator
strength
B.W.J. McNeil, N.R. Thompson, Nat. Phot. 2010
Increasing the undulator lengthRelativistic Electron Bunch
Undulator
Radiation | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 7 |
7ffdc1ef-906a-4d1f-a0a4-2be8c85bdca4 | Transverse coherence of FELs
SACLALCLS
FLASHFERMI
IPAC 23, May 7-12 2023
C. Gutt et al., PRL 108,
024801 (2012)
A. Singer et al. PRL 101,
254801 (2008)
M. Pop et al., PRAB 25, 040701
(2022)
I. Ichiro et al., IUCrJ 2, 620
(2015) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 8 |
8f75875b-4bfb-4da2-97e2-e16af795a2b6 | IPAC 23, May 7-12 2023
Longitudinal coherence of FELs
FLASH
PAL-XFEL
W. F. Schlotter et al., Optics
Lett. 35, 372 (2010)
G. Penco et al., PRA 105,
053524 (2022)
FERMI
K. Yun et al., SciRep 9, 3300
(2019)
O. Y . Gorobtsov et al., Nat.
Comm. 9, 4498 (2018) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 9 |
49b05b40-85fd-49ac-8417-c87d738d330f | IPAC 23, May 7-12 2023
Elettra Sincrotrone Trieste
e-Injector+Linac
(~200m)
Undul. Hall
(~100m)
Exp. Hall
(~50m)
FERMI FELs
High Gain Harmonic Generation•First lasing in 2010
•e-Linac up to 1.55 GeV ,10-50 Hz
•FEL-1: 20 – 100 nm (fund.)
•FEL-2: 4 – 20 nm (fund.) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 10 |
7c59d4fc-93e6-4f9d-8f6d-d7dad8cfd8c3 | Courtesy of G. Penco
SASE ( Self-Amplified Spontaneous emission ) vs HGHG ( High Gain Harmonic Generation ) FELs
IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 11 |
ea27b703-6131-4095-a35d-cae2635ba5c7 | Collective phenomena in LINAC
density mod.
energy mod.
acceleration
dispersive region
Simulated 30 𝜇m
wavelength, 1%
amplitude at 100 MeV
Increased Energy Spread
Microbunching Instability
S. Di Mitri S. Spampinati,
PRL 112 (2014)Microbunching instability: shot noisedisomogeneity, modulation wavelength
in the range ... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 12 |
5d623797-9ea0-4e7b-a18f-35ca82d11f1a | IPAC 23, May 7-12 2023
IBS & energy spread
MBI-induced
en. spreadIBS-induced
en. spreadInitial en. spread
D. Ratner et al. PRAB 18, 030704
(2015) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 13 |
9ee3be21-ffcf-42da-8998-0117b50c9bfe | IPAC 23, May 7-12 2023
IBS & energy spread
MBI-induced
en. spreadIBS-induced
en. spreadInitial en. spread
Impact of IBS on MBI
G. Perosa and S. Di Mitri., SciRep 11, 7895 (2021)
650 pC
0.9 GeVFERMI
S. Di Mitri et al, New J. Phys. 22
(2020)
SwissFEL
200 pC
0.9 GeV
E. Prat et al. PRAB 25, 104401
(2022) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 14 |
c1d68d68-2f9d-4117-b5f1-f680dd208479 | IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 15 |
a61cb2eb-2e2c-4305-82cf-76cebfc91a08 | IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 16 |
82b47d67-98e9-4f55-8d95-2b032ac642a7 | IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 17 |
2693a712-03f8-43ce-a5c8-301dcda664ed | IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 18 |
88a38f07-c7a6-4e49-b488-52b2d4441fc1 | IPAC 23, May 7-12 2023 | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 19 |
e2ee9eda-f02d-4f1b-aaf1-7f77cd2bcc0b | IPAC 23, May 7-12 2023
…can we go beyond the classical definition of
coherence? | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 20 |
af7bc31b-497c-40f6-b8ea-71269f4330c9 | IPAC 23, May 7-12 2023Glauber’s cryterion for full coherence requires the correlation function at any order = 1.
Poisson distribution
From correlation to photon counting
This cryterion is satisfied by the Glauber coherent states | 𝛼⟩, where𝛼is a complex number
Super-Poissonian
Sub-PoissonianSCOPE :
•Characterize th... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 21 |
64871387-1acf-4222-a688-8b4200fc598c | From photon counting to no-photon counting
IPAC 23, May 7-12 2023Only 2 possible output:
neutral filter
Geiger-like
detector
with
efficiency 𝜂On-click: light registered
Off-click: no light registeredPhoton distribution
P(n)
n
Simulations
Multimode-displaced thermal state:
-M = 3 0
-𝛼in the range [1,5]
-nT= 100
B... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 22 |
618ab48b-2735-4ad1-ae4d-3cc60f9818a4 | IPAC 23, May 7-12 2023
Conclusion & Perspectives
Coherence is an unvaluable feature of Free Electron Lasers for experimental investigation of
matter.
Longitudinal coherence is strongly affected by electron dynamics when approaching X-rays.
IBS is becoming a relevant effect to be considered in the high-quality bea... | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 23 |
587e519d-937d-4260-ac8e-2474c5072925 | IPAC 23, May 7-12 2023
Giovanni Perosa
Elettra Sincrotrone Trieste
Acknolowdgement
FERMI team
Simone DI MITRIFulvio PARMIGIANIFabio BENATTIStefano OLIVARESINFN (Pavia) | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 24 |
f450bdbf-73f2-4c17-a5fe-865ea1841039 | IPAC 23, May 7-12 2023
Giovanni Perosa
Elettra Sincrotrone Trieste
Thank you for the attention | d:\Daily_ihep\Weekly Progress Report\20260425\41_IPAC'23\FRXD - MC05.4 - Beam Dynamics and Electromagnetic Fields (Invited)\FRXD1_talk.pdf | 25 |
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