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46f13a66-aea8-425f-907f-583d415dfc92 | charge effect s are not a significant source of beam losses in
PSR until the accumulated charge does not exceed
6 μC [5].
Figure 5: Evolution of transverse beam sizes along high -
energy beam transport : (black) 𝜎𝜎 𝑥𝑥, 800 MeV; ( blue) 𝜎𝜎𝑦𝑦,
800 MeV; ( red) 𝜎𝜎𝑥𝑥, 700 MeV; (green) 𝜎𝜎𝑦𝑦, 700 MeV. ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP012.pdf | 2 |
c5d5f99e-f8c8-4134-9724-35e77c802fe4 | REFERENCES
[1] K. W. Jones and P. W. Lisowski , “LANSCE high power op-
eration and m aintenance experience ”, in Proc . of AccApp ’03,
San Antonio, TX, USA, Jun. 2003, p. 372.
[2] T. F. Fronk, “ Aspects of b eam stability of the LANSCE ac-
celerator facility ”, M. Sci. Thesis, Indiana University, Bloom-
ington, I... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP012.pdf | 3 |
c7b9b72f-ca35-43f8-8f96-0f70bcf0f51b | CRITICAL DESIGN ISSUES OF THE NOVEL MULTI-BEAM LANSCE
FRONT END
Y . K. Batygin, Los Alamos National Labor atory, Los Alamos, New Mexico, 87547, USA
Abstract
The proposed novel 100 MeV injector for the moderni-
zation of the LANSCE Accelerat or Facility [1] aims to re-
place the existing injector based on 750-keV Co... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 0 |
2983ba3d-648c-42ac-8472-b0f42b650d9d | tor is the different degrees of space charge neutralization of the multi-component beam. Coupling between degrees
of freedom in the presence of strong space charge forces of
the beams results in unavoida ble beam mismatch in the
Front End and requires careful six-dimensional matching
of beams with accelerator struc... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 0 |
c9444dd8-9617-4bcb-acfb-2946e61224c8 | (IPF), while 800 MeV H- beams are distributed to four ex-
perimental areas: the Lujan Neutron Scattering Center, the
Weapons Neutron Research facility (WNR), the Proton
Radiography facility (pRad), and the Ultra-Cold Neutron facility (UCN). To reduce long-term operational risks and
to realize future beam perform anc... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 0 |
eaf1d878-e6de-42aa-a515-2709b3b7d8f9 | with subsequent simultaneous acceleration of H+/ H- beams
with multiple beam flavors in a single RFQ. Multi-beam structure is achieved with beam chopping and bunching in
LEBT.
Because H
- beam leg accommodates 2 different types of
beams (LBEG/UCN/pRad and WNR), the transverse
matching assumes adjustment of eight T... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 0 |
c6e85a85-3b9e-40e7-bbc9-d72ce63d1965 | with an additional solenoid in the common LEBT beam-
line. The 3-MeV Medium Energy Beam Transport contains
several choppers and rebunchers to match beams to the
novel DTL. After RFQ and MEBT, beams are accelerated
in the Drift Tube Linac from 3 MeV up to 100 MeV .
.
Figure 1:
Layout of the proposed LANSCE Front ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 0 |
e291fbbe-762e-4e92-841f-aeb368d68853 | Figure 2: LEBT dynamics of 25 ns chopped H- WNR beam
pulse with subsequent bunching by the 10.0625 MHz Low Frequency Buncher: (red) vertical, (blue) horizontal.
(a) (b)
(c) (d)
Figure 3: (a-c)_ transverse beam emittances at... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 1 |
d36cb0bf-6f95-4836-94b9-9026355f8289 | sure of residual gas 631 0 Torr is estimated as 𝜏௺ = 56 μs.
Since the Lujan beam pulses are 625 μs long, such a beam
would be fully space charge neutralized, which was ob-
served experimentally in LANSCE 80-keV H- Test Stand
[5]. However, the WNR beam, as a combination of short
single bunches, separated by long... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 1 |
c589bc3d-8e9a-4526-adfc-c254ec326640 | R I
, (1)
where I is the beam current, S is the focusing period, R
is the average beam radius, and 34/coI mc q is the
characteristic beam current. Beam emittance growth due to
space charge in transport systems is estimated as [6]
2
21( 1 )f o
iW
W
, (2)
where /WW ~ 0.02 -0.1... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 1 |
639defae-d133-45ae-a359-cb02b25ae708 | transport with given beam radius and emittance.
The value of the beam radius in LEBT is determined by
the requirement to p rovide sufficiently lo ng beam drift be-
fore beam waists for the placement of the chopper, Low
Frequency Buncher, and merging area of the H+/ H- beams.
For space charge dominant beam drift, t... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 1 |
89dc4fa7-5e76-4201-b87e-0750a7ff9a77 | beam current to avoid sign ificant emittance growth is limI
= 13 mA, which is 30% larger than that in the present op-
eration of the LANSCE fac ility. The further increase of
beam current is restricted by the H- intra-beam stripping
effect in the high-energy part of the machine, which in-creases beam loss as the squa... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 1 |
70c9da8a-4d2e-434e-a368-7bcd6139e469 | Table 1: Normalized Transv erse RMS Beam Emittance ( π
mm mrad) and Charge Per Bunch in the Proposed
LANSCE Front End
Beam
(Facility) Source 100 keV 3 MeV Q/b
(pC)
H-(Lujan/
pRad/UCN) H
- (WNR)
H+ (IPF)
0.2 0.2
0.03
0/26
0.47
0.12
0.45 0.68
0.17
60
125
20
Figure 4: Time structure of H- WNR an... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 2 |
a7791ea5-87ff-453c-921b-98499160a677 | WNR beam is a sequence of single bunches, followed by a frequency of 0.56 MHz. Each WNR bunch is first cut from
the DC beam with a short chopper pulse. The chopped
beam pulse goes through the Low Frequency Buncher and receives modulation in longitudinal momentum. Then, in
drift space, the WNR bunch ro tates in longi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 2 |
0cb767e5-a85e-4e40-a2f9-d1f0f412b1ad | Analysis of chopper systems was done in [9]. The longi-
tudinal bunch size, 2RLFBcWNR, is determined by the
chopping pulse WNR , which is affected by the power sup-
ply rise time and edge field of the chopper [10]. The tran-
sient time in a traveling wave chopper with an aperture a
= 5 cm is /( )tac = 11.4 n... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 2 |
da61e226-985c-4168-b79a-e32a9db3664f | = 1.7 m. Αfter the Low Frequency Buncher, the longitudi-
nal beam radius is compressed as L w FB RR /2.35 =2.98 cm
(see Fig. 3d). Therefore, at th e injection to RFQ, the longi-
tudinal bunch size, 2wR= 2.7 , is larger than the longi-
tudinal RF bucket. It results in the appearance of satellite
WNR bunches after R... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 2 |
648e79bf-8093-432d-a2be-ece8f2603655 | nas, Brazil, May 2021, p.1894 (2021).
[2] K. W. Jones and P. W. Li sowski, “LANSCE High Power Op-
eration and Maintenance Experience”, in Proc. 6th Int. Top.
Meeting Nucl. Appl. Accel. Technol. (AccApp’03) , p. 372, San
Antonio, USA, Jun. 2003
[3] Y . K. Batygin, D. A. Dimitrov, I. N. Draganic, D. V . Gorelov,
E.... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 2 |
8173e917-300b-47f5-bd13-2d696201097e | for LANSCE Acceleration Facility ”, J. Phys.: Conf. Ser. 2687
052006 (2024).
[5] Y . K. Batygin, I. N. Draganic, C. M. Fortgang, G. Rouleau,
“Space Charge Neutralization of Low Energy H- Beam”, in
Proc. IPAC’13, Shanghai, China, p. 1856 (2013).
[6] M. Reiser, “Theory and Design of Charged Particle Beams”,
Whiley... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THP020.pdf | 3 |
797b3601-5ce7-473b-97e7-43ba314123ad | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
1060fd64-3d68-4c90-b328-69811b345d95 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
efe0ab13-b7a3-4e21-af17-fff6977dde83 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
7984e962-3456-4c22-bb86-3310a9a2d29f | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
19a9bdef-f3f8-4d86-9c07-c050ea8a98e8 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
56030ea7-b11e-4531-a8f9-c1a83ebce468 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 0 |
6a6e4e8e-a874-4423-aa7f-45539c6a16c4 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 1 |
2ad63a03-ea3f-465c-a960-87bb149c39e4 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 1 |
143f722a-e299-4577-955f-9c586ff3ee35 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 1 |
575bb182-04c3-4eec-8d8a-4f3cf1ee218a | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 1 |
7fb4f741-5603-4f1c-8489-99b1a351ec26 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
aeccbdf6-1c44-4550-b578-48d7452a90b6 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
4deb3f9a-9ea0-4518-bf40-a99ac75ea795 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
356efc98-3841-4324-afb5-4a2a50cab9ef | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
7da71a6c-4855-4f11-b012-463202c2e629 | [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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
a9900d0f-3abb-4a3e-8fc9-859be99ec685 | 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\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\THPS137.pdf | 2 |
bd130fd6-aaee-4188-afde-0472302f88a9 | PROTOTYPING FOR THE ALBA II VACUUM SYSTEM*
R. Parise†, P. Ros, L. Carvajal, O. Traver, J. Álvarez, G. Peña, L. Ribó, J. Boyer, P. Salmeron,
B. Francisco, L. Nikitina, J. Ladrera, A. Fontanet, B. Zhang, M. Ning, V . Massana, L. Torino,
M. Carlà, O. Blanco, T. Günzel, Z. Martí, I. Bellafont, M. Quispe, M. Ll... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
00164034-3795-45aa-bf4b-0fee25293936 | distributed directly onto the chamber walls. Nevertheless,
crotch absorbers will be used at key locations. Due to the
low conductivity in such small chambers, the entire ring
will be NEG coated to accelerate vacuum conditioning and
achieve the required ultimate pressure. Most of the vacuum
chambers of the 268.8 m ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
e0d50aec-6554-4e14-9d85-048c12db7a39 | sents the o verall vacuum system status, the design and pro-
duction of vacuum prototypes, and initial component tests.
INTRODUCTION
ALBA II is a major upgrade of the ALBA synchrotron
light source in Spain, aiming to transform its storage ring into a fourth -generation, diffraction -limited facility [1].
The upgr... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
c7c547d4-1974-4e5d-9758-6a574825b3c5 | early freeze was a strategic decision to reduce project risk
and ensure timely use of committed funding before De-
cember 2025 . This paper presents the current vacuum sys-
tem des ign, details of the prototypes manufactured to date,
and the strategy to adapt them to the evolving 5BA layout.
ALBA II V ACUUM SYSTEM... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
7f671f5f-673b-4ae4-8299-4578c47d2e95 | minimize resistive wall impedance and allow distrib-
uted pumping.
• A conventional antechamber design will be imple-
mented locally to manage synchrotron radiation (SR)
power and accommodate photon absorbers and pump-
ing elements.
• Stainless -steel (SS) chambers will be used in corrector
magnet locations to ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
e7bab120-3566-4e6a-8d89-e9de27495113 | bly. Synrad+ and Molflow+ simulations [4] indicate that,
with this strategy, an average pressure of 2.4 ×10⁻¹⁰ mbar
CO-equivalent can be reached after 100 Ah of accumulated
beam dose for the long dipole chamber, as shown in Fig. 1.
Figure 1: Conditioning plot for the chamber prototypes.
Another key feature is... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
27ce99bf-54a4-4d8a-8a47-b562f879973f | absorbers, typically rated at 75 l/s, to provide local pump-
ing and complement the distributed NEG pumping. 2.4E -10
1.E-111.E-101.E-091.E-081.E-07
10 100 1000Mean CO equivalent at 350 mA [mbar]
Beam dose [Ah]Conditioning plot: Mean CO -equivalent vsbeam dose
QDS1
QD1
QDS1 without NEG
QD1 without NEG
______________... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 0 |
86b98432-6876-45e5-9f50-4a4232f6f129 | PROTOTYPES DESIGN
To validate the proposed solution and its manufactura-
bility, the following prototypes are being fabricated:
• A short dipole chamber in OFHC -Cu, with brazed
flanges and NEG coating;
• A long dipole chamber in CuCrZr, with integrated ab-
sorber, avoiding brazing to prevent annealing; also ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
09287ebd-fd81-4fa1-a71b-6ea536b08506 | typing: the QD (long dipole) and QDS (short dipole ). The
tender for their manufacture was to FMB Berlin [8] in
2024. Delivery is expected the end of 20 25.
The QD chamber spans six magnets and is approxi-
mately 2 m long, entirely manufactured in CuCrZr and fea-
turing NEG coating, depicted in Fig. 2b . Its desig... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
b07f36d3-5e75-4eae-bd36-9f33f243f729 | and external grooves to fit within the magnet pole s.
To manage the SR power some strategies were adopted:
cooling circuits along the full chamber length, with surface
power densities targeted below 1 6 W/mm²; conical ab-
sorber at the exit flange to shield sensitive downstream
components such as BPM and gaskets ;... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
74cfe5ff-3c68-4f77-ad9b-c26eeb98f0d0 | MPa with strain below 0.18 %. These values are all within
ALBA’s design criteria for CuCrZr components . An example of these analyses can be found in Fig. 2c.
The chamber maintains a minimum wall thickness of
1 mm in most of its sections, except in the dipole section in
which a 0.8 mm thick wall was necessary . S... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
c3ae0d2c-4c16-446f-82b5-ef6938a93342 | The cooling tubes will be attached using a low -tempe rature
silver brazing alloy, combined with mechanical clamping
to ensure thermal contact and mechanical integrity.
The QDS chamber , shown in Fig. 2a, spans three mag-
nets (1.3 m) and follows the same main design principles
as the QD chamber. Its geometry is... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
c555bd6f-d76e-4ee4-b4b9-3618ae0538f2 | To understand the mechanical behaviour of the annealed
copper resulting from the brazing process, finite element
simulations were performed under expected operational
conditions. The results show minimal deformation and
strain, with stresses below 9 MPa , within ALBA’s design
criteria for annealed copper componen... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
0769fb21-f3f4-4280-9a4a-7a59d5928014 | the blocks was done by FMB Berlin, using TIG, and BC -
TECH, using laser, each producing two complete prototype
chambers, with the FMB versions also NEG coated .
Dimensional inspection, vacuum leak testing and elec-
tromagnetic measurements were performed on all four
BPM chambers. The results can be found in [1 4].
... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 1 |
c1ef9927-5836-4b84-8e0b-cf33425c13c5 | (b) RF Shielded B ellows
Three RF -shielding concepts were evaluated for the
ALBA II bellows: gear -type, barrel -type, and RF fingers.
The gear -type concept, inspired by developments at Sirius
[15] and Soleil -II, integrate s the BPM block and bellows
into a single unit, as studied in [16]. Despite its compact... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
44814cfc-d52b-4296-a939-f14ecd2e68d7 | Figure 3: (a) BPM and (b) RF -shielded bellows prototypes .
Photon Absorbers
To manage localized SR power at specific points along
the storage ring, discrete crotch absorbers are included in
the vacuum system layout. As part of the ALBA 01 proto-
typing program, a Glidcop photon absorber , to be mounted
on a dedi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
53626493-4e5b-4ca9-b6e7-d990d9a9f65f | with a peak power density of 33 W/mm². Thermomechan-
ical analyses predict a maximum temperature of 260 °C for
the absorber , and 65 °C , for the cooling channel s. The re-
sulting maximum stress is 185 MPa with strain remaining
below 0.16%, all within design criteria for Glidcop com-
ponents .
Figure 4: Photon... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
b956cc4b-be27-4493-9ccd-1ffb0daa8c7d | • A fully machined CuCrZr version with no brazing.
These samples aim to benchmark both manufacturability
and functional performance, including compatibility with
NEG coating, dimensional tolerances, and mechanical ro-
bustness. NEG saturation behaviour will be evaluated
through activation and pumping tests. This ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
18f8d9e2-9f49-4ea6-b808-74fa6bb716f5 | change provided more longitudinal space between magnets
while maintaining the same bore diameter, allowing the in-
tegration of a more tradition al, yet compact, photon ab-
sorber to manage the SR power, replacing the function pre-
viously handled by the integrated absorber in QD chamber.
The BPM chamber and the RF ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
7d2922db-4cc7-43bd-92d3-07c86a9e05df | load but at a lower peak power density.
To provide the aperture needed for injection efficiency,
the conical absorber at the exit flange, used to shadow
downstream components, must now be asymmetric, with
the right side (internal to the ring) slightly smaller.
Other m oderate geometric adjustments , such as chan... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 2 |
98511e3f-1aff-4aff-a1ec-ac759d553adc | REFERENCES
[1] F. Pérez et al. , “ALBA II Accelerator Upgrade Project Sta-
tus”, in Proc. IPAC’25, Taipei, Taiwan, Jun. 2025, pp. 706–
709. doi:10.18429/JACoW- IPAC25-MOPS043
[2] G. Benedetti et al., “Progress on the 5BA lattice studies for
ALBA-II”, presented at the IPAC'25, Taipei, Taiwan, Jun.
2025, paper WEPM... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 3 |
b2ec97ca-6fa8-424a-9dde-4dbb99500a1d | type Flanges to Accelerator Beam Pipes”, in Proc. IPAC’10 ,
Kyoto, Japan, May 2010, paper THPEA080, pp. 3855-3857.
[6] J. Boyer et al. , “The girder system prototype for the ALBA
II storage ring” , presented at MEDSI’25, Lund, Sweden ,
Sept. 2025, paper WEP62 , this conference.
[7] L. Ribó et al. , “Layout o... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 3 |
c5a98e1f-9243-4522-9b0e-a53500a5983e | doi:10.18429/JACoW- MEDSI2023- WEOBM01
[11] L. Torino et al. , “Design of the BPM Button for ALBA II”,
in Proc. IBIC’2 4, Beijing , China , Nov. 2024, pp. 174-177 .
doi:10.18429/JACoW- IBIC2024- TUP55
[12] Kyocera. https://global.kyocera.com
[13] BC-TECH. https://bctech.ch/en
[14] L. Torino et al. , “Button BPM ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 3 |
6a3c27ef-99f4-4efd-b36d-d907c9b550e2 | [17] R. Ganter et al., “SLS 2.0 vacuum components design”, in
Proc. IPAC'23 , Venice, Italy, May 2023, pp. 4301 -4304.
doi:10.18429/JACoW- IPAC2023- THPA147
[18] M. Quispe et al., “Design of an Integrated Crotch Absorber
for ALBA Synchrotron Light Source”, in Proc. MEDSI'18,
Paris, France, Jun. 2018, pp. 258 -... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB008.pdf | 3 |
d9deb3e7-ac4a-43b1-be7f-a67b90e3f7e9 | DOSE CALCULATIONS FOR WARM QUADRUPOLES
IN THE LHC OFF-MOMENTUM CLEANING INSERTION∗
K. Taylor, R. Bruce, A. Canesse, A. Lechner, S. Redaelli, V. Rodin, P. Schoofs
CERN, Geneva, Switzerland
Abstract
Interaction Region3 (IR3) of the Large Hadron Collider
(LHC) houses the off-momentum collimation system, de-
signedtoremove... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
b81fb126-68c6-413f-b82c-8e0966526944 | quadrupolesduringapreviousshutdown,furthershielding
may be required, prompting dose predictions through the
HL-LHCeraintheearly2040s. ThispaperpresentsFLUKA
simulations where the off-momentum proton and heavy ion
lossesinLHCRun2(2014-2018)andRun3(2022-2026)
are estimated from Beam Loss Monitors (BLMs). These
estimates ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
87bbc97b-4957-49b3-97e6-07842a9219f6 | tor, which are made of carbon-reinforced carbon composite
blocks. Here, they undergo nuclear interactions, generat-
ingradiation showers. The showerspropagatedownstream
impacting components, including the normal conducting
quadrupoles within the IR3 region.
This study summarises two analyses. The first involves
calcula... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
b64cd56d-f371-41c0-987c-6e68f9528033 | expected magnet lifetime by comparing predicted exposure
to estimated safe limits.
∗Researchsupported bythe HL-LHC project
1LHC operates with Pb ions about one month per year, HL-LHC will
assumethe same operational scenario.
Figure 1: Left: FLUKA model: Shielding inserts through
quadrupole. Right: FLUKAmodel: tungstens... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
559234b4-54f4-47d2-b4c1-4d69e6412b15 | diationdamageresultsinembrittlementofthepolymer. The
spacers secure the magnet components in place and with-
stand significant force, and so a loss of mechanical strength
duetoradiation-induceddegradationisofconcern. Previ-
ousassessmentsestablishedradiationdoselimitsforthese
materialsbeforedegradationoccurs: 10MGyforc... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
122447e3-c4ef-4241-857e-ea5d721ebea8 | ForbothRun2andRun3geometries,separateFLUKA
models were created for proton and Pb ion beams, using
identicalcollimatorsettings,butwithdifferentbeamtypes.
Eachmodelincorporateddetailedscoringalongthewarm
quadrupoles in the longitudinal direction (or S position), lo-
catedinthecoilandspacerregions. FLUKAscoringdefines
the... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 0 |
163cf7b9-8fa5-41dd-b94b-e8a292edcb3b | Figure2: Acomparisonbetweenexperimentaldosesfrom
BLM data with scaled simulated data as a function of the
position in S along the beamline. The simulated data, ini-
tiallyprovidesavalueperparticlelost,andsomustbescaled
usingparticle losses- theseare calculatedbydividing the
maximum experimental value by the correspondi... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 1 |
95c60db3-a10d-462d-b299-c687ce02a29a | accurately reflect real conditions, the beam depth was ad-
justed2until the simulated BLM [ 9,10] values aligned well
withexperimental measurementsfrom 2023stableprotons
asseen inFig. 2. Futurestudieswith more realisticimpact
distributions are planned in all IR3 collimators.
AlimitationofthisapproachwasthatonlyBeam1was... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 1 |
1721cf3f-47eb-478e-9483-43d3fea9c364 | simulateddoseinthemagnetcoilsandspacers. Thismethod-
ology had previously been demonstrated in IR7 studies [ 11].
The experimental BLM data for each year, integrated
over all operational LHC beam modes at 6.8TeV(6.5TeV
inRun2),werecomparedwiththecorrespondingFLUKA
simulation. Basedonexperimentaldata,particlelossesfor
p... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 1 |
f6d97afb-05a6-40ce-be83-71732d7d5d95 | and scaled by the number of days in operation for each year.
ParticlelossesfortheHL-LHCoperationhadtobeextrap-
olated. Inthecaseofprotons,thelossesperyearweretaken
toapproximatelytwicethatof2024,basedonthecumulative
beam intensity. Losses per year for ions were assumed to be
equal to the total losses to date, as the HL... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 1 |
b481dc88-04d9-4a93-9653-8a9d98386094 | peak dose on the spacers, shown in Fig. 4.
Table 1: EstimatedProtons and Ions Lostper Year
Protons Lost / year Pb Ions Lost / year
Beam 1 Beam 2 Beam 1 Beam 2
Run 2
2015 5.86×10131.37×10131.71×10110.78×1010
2016 1.47×10141.21×1014NA NA
2017 1.46×10141.20×1014NA NA
2018 1.73×10141.73×10145.34×10112.26×1011
Total 5.24×10... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 1 |
8fb6cb84-b0bf-4870-ac1f-0a54085ec0d3 | Figure4: Detailedscoringallowstheobservationofdoses
received specifically by the coils and spacers, where the
insulating material within is most sensitive. Left – the dose
from 1 year HL-LHC proton operation in MQWA.E5L3
quadrupole. Right – dose from 1 year HL-LHC Pb Ion
operation in MQWA.E5L3 quadrupole.
Dose contribu... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 2 |
7b8e12ca-0ae5-43c4-87a6-1e79a63694fb | doseoccurredattheupstreamendofthemagnet. Thedoses
shownacross the whole magnet region demonstrate higher
dosesthaninthecoils. Mostofthedoseimpactsthemagnet
yokeandtheshieldinginserts-withtheshieldingabsorbing
much of the dose that the coils would otherwise receive. In
contrast,Run2datawithoutshieldingshowedamuchflatter... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 2 |
572c77df-5195-4284-9e47-2a18dcc2130f | HL-LHC – Protons (10 years) 25.0 1.50
HL-LHC – Ions (10 years) 0.41 0.10
Total 3.83 1.88
Figure5: Yearlypeakdosesreceivedalongthelengthofthe
MQWA.E5L3coilduringHL-LHCProtonoperationshow
a decrease with increase in S position - corresponding to
the magnet depth, as the shielding effectively attenuates the
radiation. The... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 2 |
c877ca2b-3dd5-4b98-bee4-78c6d4ec25e1 | magnetdosesduringthePb-Pbionrunwerenegligiblecom-
pared to protons, remaining at tens of kGy level. Given
theshortdurationofPbionrunsofonlyonemonthayear,
plus a lower integrated luminosity than protons, it can be
concluded that ions do not pose a significant threat to the
magnet integrity.
CONCLUSION
Using updated FLUK... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 2 |
81dbcf21-deb0-4b3f-9ed1-82da9eb991e1 | REFERENCES
[1]R. W. Assmann et al., “The Final Collimation System for the
LHC”, in Proc.EPAC’06 , Edinburgh, UK, Jun. 2006, paper
TUODFI01, pp. 986–988.
[2]O. Aberle et al., “High-Luminosity Large Hadron Collider
(HL-LHC): Technical Design Report”, CERN Yellow Re-
ports: Monographs, CERN,Geneva,2020.
doi:1/zero.alt4.23... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 3 |
e2a8bb91-c277-4545-9706-f8502dde5d77 | doi:1/zero.alt4.1/zero.alt416/j.anucene.2/zero.alt414.11./zero.alt4/zero.alt47
[6]FLUKA.CERN website, https://fluka.cern[7]A. Mereghetti et al., “Linebuilder”, https://gitlab.
cern.ch/bmi/fedb/coupling/linebuilder
[8]A. Lechner et al., “Recap of previous energy deposition stud-
ies for IR3 magnets”, https://indico.cern... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 3 |
6043ba31-935f-4334-82e6-60481cb0a53d | paperFRPMN071,pp.4192–4194. https://jacow.org/
pac2/zero.alt4/zero.alt47/PAPERS/FRPMN/zero.alt471.PDF
[11]A. Canesse et al., “2022 & 2023 proton losses in LHC
IR7”, https://indico.cern.ch/event/1382452/
contributions/5853968/attachments/2827/zero.alt4/zero.alt45/
4938881/MCWG58-proton-losses-IR7-2.pdf | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOPA - MOPA MC9 Poster presentations_ MC9 Poster Presentations\TUPB091.pdf | 3 |
aac50389-0cf9-494b-8fab-e9917560ac2b | MOXA1
TEST | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOXA - MOXA MC1 Invited Orals_ Invited Oral Presentations\MOXA1.pdf | 0 |
631f9a0a-3d80-4510-b750-022c401200d6 | STATUS OF THE NATION AL IGNITION FACILITY (NIF) INTEGRATED
COMPUTER CONTROL AND INFORMATION SYSTEMS
M. Fedorov, A. Barnes, L. Beaulac, G. Brunton, A. Casey, J. Castro Morales, J. Dixon, C. Estes,
M. Flegel, V . Gopalan, S. Heerey, R. Lacuata, V . Miller Kamm, M. Paul, B. Van Wonterghem,
S. Weaver , Lawrence L... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
63d604bc-83f8-4897-affc-06ad55fba4b1 | teriors of stars and planets, as well as our primary scientific
applications: stockpile stewardship and fusion power. NIF
control and diagnostic systems allow physicists to pre-
cisely manipulate, measure and image this extremely dense
and hot matter. A major focus in the past two years has been
adding comprehensiv... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
2b0d73cd-7e54-4ca2-85f6-7d5a8d492b40 | achieving record neutron yields in 2021.
INTRODUCTION
The National Ignition Facility is a large (3 football
fields) and complex (192 laser beams) experimental phys-
ics system (Fig. 1) [1] . It is efficiently operated 24x7 by a
shift of the 12-14 Control Room ope rators with the help of
the Integrated Computer... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
c364ce85-fb74-4467-8074-7bd7730972ef | National Security Applications, and Inertial Confinement Fusion (ICF). For ICF, thermonuclear i gnition has been the
long-term goal of the facility , defined as producing more
energy from the DT target fusion than the 3w laser energy
on the target (for example, 1. 9 MJ). The NIF was pursuing
the ignition goal for ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
b37b4432-aa18-4c8f-8040-4eccc1795bdd | duced from 14 to 3 operators. Controls and IT teams have
supported the change, assuring continuity of operations of
the networks, hardware and ICCS in a non -shot, monitor-
ing mode.
Figure 2: NIF Control with COVID -19 personnel protec-
tions: plexiglass screens, masks, traffic barriers .
Soon after the U.S. Ce... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
346c8bb9-1e5e-4b96-8cbd-832144657cf3 | welcomed by the U.S. National Nuclear Security Admin-
istration [ 2,3].
While initially the restarted operations progressed
slowly and deliberately , soon the shot rate had ramped up
to normal, and control teams had to address the need for
support and maintenance activities such as ICCS releases.
Traditionally, ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 0 |
b196f393-0b61-43dd-a31c-8862a69ae466 | and troubleshooting, ICCS software engineers were pre-
sent in the NIF Control Room (Fig. 4) . Now, with the Con-
trol Room access limited to operator shift only, and most
of the software group s and IT teams working r emotely
from their homes , we had to come up with new processes
and tools .
Figure 3: Acces... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 1 |
de534f87-478f-4e86-8a5b-bcbd85fdf46e | fice 365 for distributed “cloud ” collaboration (similar to
Google Docs). Both s oftware release coordination and off -
hours support have moved to these platforms (Fig. 5) [4].
EXPANDING LASER AND DIAGNOSTI CS
CONTROLS CAPABILITIES
With COVID -19 concerns addressed and mitigated, the
control teams have return... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 1 |
0feb2a9f-31ce-443b-8d7e-3c8e381f5efe | 600 rich API devices of 55 types (cameras, oscilloscopes,
alignment, etc.).
Figure 6: One of user interface panels developed for new
Optical Thomson Scattering (OTS) Laser and Diagnostic .
Several new diagnostic instruments, of varying com-
plexity, are being added to ICCS every quarter. One of the
most sophis... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 1 |
b004db3f-6d97-41b0-adb9-d88ce4d3b813 | The design of the OTS control system and its alignment
algorithms are covered by separate presentations at this
conference [ 5,6].
Laser Diagnostics Controls
While ICCS Target Diagnostic s capture a variety of data
about behaviors of the targets, it is equally important to
preci sely characterize the “driver ”... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 2 |
f20f4656-fd83-4de6-bead-a786362ab82a | signed to obtain the energy measurements by placing a set
of NIST -calibrated calorimeters into the target chamber,
with a pinhole to separate 3w from unconverted 1w and 2w
light (Fig. 8).
Figure 8: Target Chamber Calorimeter .
TC-CAL is a large (4.5 m+) and heavy (350 kg) mechan-
ical device . ICCS developed ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 2 |
95e98c47-c2f0-408d-a38b-cca7c43deb6c | tivated, adding over 400 control devices. In addition, a new
motorized mirror pickoff was implemented, so a selected
beam is automatically routed for a detailed characterization
by calorimeters , oscilloscopes, cameras, and spectrometers
on multiple 1w and 3w dia gnostic tables .
Expanding Laser Master Oscillato... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 2 |
225da2d0-741c-4d31-a2fa-789002c9d68c | Figure 11: Laser pulse shape stability shot-to-shot im-
proved 3X with the completion of 4 th Color project .
Once the new hardware components and new enhanced
design, the Pre-Shaped Pulse Generation (PSPG) , were uti-
lized , the effort also resulted in 3X improvement in shot -
to-shot stability of the laser pulse... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
ef677dd6-6fa9-4503-89bb-d9d9178d246b | rithms . The goal is to achieve 4X better short -term pulse
shape stability, and better than 0.5% accuracy of actual
waveform relative to the requested.
Recent Achievements
The multi -year efforts by NIF, LLNL and the broad sci-
entific community to better understand and control ICF
processes continue to pa y ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
58875830-7d75-4e96-ad88-28c2c1758d7d | 24x7 availability , continuous expansion of capabilities, and
efficiency optimizations to produce even more high-qual-
ity data. And since our facilities represent significant in-
vestment of public funds and human capital, we also need
to assure that facilities will continue t o produce knowledge
for the next 10 ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
57f62293-e2fe-4f13-b447-3fa2ed5e41e1 | GigE drivers, mak ing these systems diskless for high avail-
ability, consistency, and cyber security [11].
Looking further , we will be migrating a variety of NIF
embedded controllers from aging PC104/VxWorks units to
a modern, small factor platform. To support a broader
range of R&D laser projects within P... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
af30aba9-da5b-43fa-ab83-5b32c8284ca6 | has started to pay off, with fusion energy outputs rising,
bringing NIF to the threshold of thermonuclear igniti on.
Increased neutron yields attach new urgency to already
planned sustainability efforts. Some of the video camera
systems in the Target Bay will need to be replaced sooner
than originally planned : t... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
1b8100d1-c5e2-4dda-bc0a-91980c1058cc | REFERENCES
[1] M. L. Spaeth et al., “Description of the NIF Laser," Fusion
Sci. Technol ., vol. 69, p.25 -145, Mar. 2017
http://dx.doi.org/10.13182/FST15 -144
[2] COVID -19 Protocols Keep NIF on Track ,
https://lasers.llnl.gov/news/covid -19-proto-
cols-keep-nif-on-track
[3] National Nuclear Security Admin... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
2b92f9ec-9c29-4513-9571-5bc338686b77 | cal Thompson Scattering (OTS) Diagnostic ”, presented at
ICALEPCS2021, Shanghai, PRC, Oc t. 2021 , this conference.
[6] A. Awwal et al., “Image Processing Alignment Algorithms
for the Optical Thomson Scattering Laser at the National | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 3 |
f6d15e05-bfdf-410c-a494-0a5be930992d | Ignition Facility ”, presented at ICALEPCS2021, Shanghai ,
PRC, Oct . 2021 , this conference.
[7] R. Wilson et al., “Experiences with Laser Survey Instrument
Based Approach to National Ignition Facility Diagnostic
Alignments ”, presented at ICALEPCS2017, Barcelona,
Spain, October 2017 .
[8] Di Nicola, J. M., ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 4 |
b50aa4cf-15fb-4802-8077-7e8e35779f0b | of a 24x7 Operational Facility: Key Lessons Learned and
Success Strategies from the NIF Control System Moderni-
zation ”, presented at 17th International Conference on Ac-
celerator and Large Experimental Physics Control Systems
(ICALEPCS201 9), New York, U.S.A , October 201 9.
[11] V. Gopalan et al., “Modernizin... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\MOZA - MOZA MC3 Invited Orals_ Invited Oral Presentations\MOZA1.pdf | 4 |
70b950d5-68d3-4ee9-a363-a81f0d7fa0f5 | PREPARATION OF PAPERS FOR JACoW CONFERENCES∗
A. N. Author†, H. Coauthor, Name of Institute or Affiliation, City, Country
P. Contributor1, Name of Institute or Affiliation, City, Country
1also at Name of Secondary Institute or Affiliation, City, Country
Abstract
Many conference series have adopted the same standards
for... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\THPB - Thursday Poster Session_ THP Room B\THPB01.pdf | 0 |
70148dcb-4693-449b-a737-979b32ca01d9 | for electronic publication at www.JACoW.org. The abstract
itself is to act as a stand-alone entity and, as such, should
not include citations. Any acronyms should be expanded on
theirfirstoccurrence, bothinthe abstractandin therestof
the paper. The abstract itself is to act as a stand-alone entity
and, as such, should ... | d:\Daily_ihep\Weekly Progress Report\20260425\37_JFIC\THPB - Thursday Poster Session_ THP Room B\THPB01.pdf | 0 |
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