TY - CONF AU - Xu, D. AU - Hao, Y. AU - Luo, Y. AU - Montag, C. AU - Qiang, J. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Model Parameters Determination in EIC Strong-Strong Simulation J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The ion beam is sensitive to numerical noise in the strong-strong simulation of the Electron-Ion Collider (EIC). This paper discusses the impact of model parameters — macro particles, transverse grids and longitudinal slices — on beam size evolution in PIC based strong-strong simulation. It will help us to understand the emittance growth in strong-strong simulation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 9 EP - 11 KW - simulation KW - electron KW - proton KW - collider KW - emittance DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOYD4 UR - https://jacow.org/napac2022/papers/moyd4.pdf ER - TY - CONF AU - Luo, Y. AU - Berg, J.S. AU - Blaskiewicz, M. AU - Hao, Y. AU - Montag, C. AU - Morozov, V.S. AU - Ptitsyn, V. AU - Qiang, J. AU - Satogata, T. AU - Willeke, F.J. AU - Xu, D. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The Electron Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosity up to 10³⁴ cm⁻² s⁻¹ in the center mass energy range of 20 to 140 GeV. Due to the detector solenoid in the interaction region, the design horizontal crabbing angle will be coupled to the vertical plane if uncompensated. In this article, we estimate the tolerance of crab dispersion at the interaction point in the EIC Hadron Storage Ring (HSR). Both strong-strong and weak-strong simulations are used. We found that there is a tight tolerance of vertical crabbing angle at the interaction point in the HSR. PB - JACoW Publishing CP - Geneva, Switzerland SP - 12 EP - 15 KW - proton KW - simulation KW - electron KW - dynamic-aperture KW - cavity DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOYD5 UR - https://jacow.org/napac2022/papers/moyd5.pdf ER - TY - CONF AU - Contreras-Martinez, C. AU - Chase, B.E. AU - Cravatta, A.T. AU - Doolittle, L.R. AU - Einstein-Curtis, J.A. AU - Harms, E.R. AU - Holzbauer, J.P. AU - Makara, J.N. AU - Posen, S. AU - Wang, R. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - LCLS-II and HE Cryomodule Microphonics at CMTF at Fermilab J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Microphonics causes the cavity to detune. This study discusses the microphonics of 16 cryomodules, 14 for LCLS-II and 2 for LCLS-II HE tested at CMTF. The peak detuning, as well as the RMS detuning for each cryomodule, will be discussed. For each cryomodule, the data was taken with enough soaking time to prevent any thermalization effects which can show up in the detuning. Each data capture taken was 30 minutes or longer and sampled at 1 kHz. PB - JACoW Publishing CP - Geneva, Switzerland SP - 103 EP - 105 KW - cavity KW - cryomodule KW - cryogenics KW - SRF KW - niobium DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA24 UR - https://jacow.org/napac2022/papers/mopa24.pdf ER - TY - CONF AU - Green, M.A. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Considerations Concerning the Use of HTS Conductor for Accelerator Dipoles with Inductions above 15 T J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The use of high temperature superconductors for accelerator dipole has been discussed for about twenty years and maybe a little more. Conductors that can potentially be used for accelerator magnets have been available for about fifteen years. These conductors are REBCO tape conductors, which can be wound into coils with no reaction after winding, and BISSCO cable conductors, which require reaction after winding and insulation after reaction in a process similar to Nb₃Sn cables. Both conductors are expensive and the process after reacting is expensive. Some unknown factors that remain: Will either conductor degrade in current carrying capacity with repeated cycling like Nb₃Sn cables do? The other two issues are problems for both types of HTS conductors and they are; 1) quench protection in the event of a normal region run-away and 2) dealing with the superconducting magnetization inherent with HTS cables and tapes. This paper will discuss the last two issues and maybe will provide a partial solution to these problems. PB - JACoW Publishing CP - Geneva, Switzerland SP - 143 EP - 146 KW - dipole KW - induction KW - quadrupole KW - superconductivity KW - niobium DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA42 UR - https://jacow.org/napac2022/papers/mopa42.pdf ER - TY - CONF AU - Kireeff, M. AU - Bloemhard, P. AU - Hassan, T. AU - Phair, L. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Dee Voltage Regulator for the 88-Inch Cyclotron J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - A new broadband Dee voltage regulator was designed and built for the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. The previous regulator was obsolete, consequently, it was difficult to troubleshoot and repair. Additionally, during operation, it displayed problems of distortion and stability at certain frequencies. The new regulator uses off-the-shelf components that can detect and disable the RF during sparking events, protecting the RF driver system. Furthermore, it improves the tuning of the cyclotron and allows consistency in operation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 147 EP - 150 KW - cyclotron KW - feedback KW - detector KW - controls KW - power-supply DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA43 UR - https://jacow.org/napac2022/papers/mopa43.pdf ER - TY - CONF AU - Kireeff, A. AU - Phair, L. AU - Regis, M.J. AU - Salathe, M. AU - Todd, D.S. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Utilizing Python to Prepare the VENUS Ion Source for Machine Learning J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The fully superconducting electron cyclotron resonance (ECR) ion source VENUS is one of the world’s two highest-performing ECR ion sources, and a copy of this source will soon be used to produce ion beams at FRIB. The tuning and optimization of ECR ion sources is time consuming, and there are few detailed theoretical models to guide this work. To aid in this process, we are working toward utilizing machine learning to both efficiently optimize VENUS and reliably maintain its stability for long campaigns. We have created a Python library to interface with the programmable logic controller (PLC) in order to operate VENUS and collect and store source and beam data. We will discuss the design and safety considerations that went into creating this library, the implementation of the library, and some of the capabilities it enables. PB - JACoW Publishing CP - Geneva, Switzerland SP - 151 EP - 153 KW - controls KW - ion-source KW - PLC KW - interface KW - ECR DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA44 UR - https://jacow.org/napac2022/papers/mopa44.pdf ER - TY - CONF AU - Kireeff Covo, M. AU - Benitez, J.Y. AU - Bloemhard, P. AU - Garcia, J.P. AU - Ninemire, B. AU - Phair, L. AU - Todd, D.S. AU - Xie, D.Z. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Vacuum Electron Devices in the 88-Inch Cyclotron J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The 88-Inch Cyclotron at Lawrence Berkeley National Laboratory is a sector-focused cyclotron that has light- and heavy-ion capabilities and supports a local research program in Nuclear Science and is the home of the Berkeley Accelerator Space Effects Facility, which studies effects of radiation on microelectronics, optics, materials, and cells. The cyclotron utilizes several vacuum electron devices (VEDs) in different systems, mainly to convey plasma heating, high power RF generation, and high-voltage and current DC power generation. VEDs have been proven reliable, robust, and radiation resistant. They also have wide range, good response against transients, and stable operation with load mismatch during system tuning, instabilities, or breakdowns. The paper will describe applications of these devices in the 88-Inch Cyclotron PB - JACoW Publishing CP - Geneva, Switzerland SP - 154 EP - 156 KW - cyclotron KW - ECR KW - electron KW - radiation KW - plasma DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA45 UR - https://jacow.org/napac2022/papers/mopa45.pdf ER - TY - CONF AU - Al Marzouk, A.A. AU - Benson, S.V. AU - Deitrick, K.E. AU - Doran, D.S. AU - Guo, J. AU - Ha, G. AU - Hutton, A. AU - Mitchell, C.E. AU - Park, G.-T. AU - Piot, P. AU - Power, J.G. AU - Qiang, J. AU - Ryne, R.D. AU - Wang, S. AU - Whiteford, C. AU - Wisniewski, E.E. AU - Xu, T. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Preliminary Tests and Beam Dynamics Simulations of a Straight-Merger Beamline J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Beamlines capable of merging beams with different energies are critical to many applications related to advanced accelerator concepts and energy-recovery linacs (ERLs). In an ERL, a low-energy "fresh" bright bunch is generally injected into a superconducting linac for acceleration using the fields established by a decelerated "spent" beam traveling on the same axis. A straight-merger system composed of a selecting cavity with a superimposed dipole magnet was proposed and recently test at AWA. This paper reports on the experimental results obtained so far along with detailed beam dynamics investigations of the merger concept and its ability to conserve the beam brightness associated with the fresh bunch. PB - JACoW Publishing CP - Geneva, Switzerland SP - 206 EP - 209 KW - dipole KW - experiment KW - simulation KW - cavity KW - electron DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-MOPA72 UR - https://jacow.org/napac2022/papers/mopa72.pdf ER - TY - CONF AU - Lewellen, J.W. AU - Filippetto, D. AU - Karkare, S.S. AU - Maxson, J.M. AU - Musumeci, P. AU - Smedley, J. AU - Vecchione, T. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - The Quest for the Perfect Cathode J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The next generation of free electron lasers will be the first to see the performance of the laser strongly dependent on the materials properties of the photocathode. A new injector proposed for the LCLS-II HE is an example of this revolution, with the goal of increasing the photon energy achievable by LCLS-II to over 20 keV. We must now ask, what is the optimal cathode, temperature, and laser combination to enable this injector? There are many competing requirements. The cathode must be robust enough to operate in a superconducting injector, and must not cause contamination of the injector. It must achieve sufficient charge at high repetition rate, while minimizing the emittance. The wavelength chosen must minimize mean transverse energy while maintaining tolerable levels of multi-photon emission. The cathode must be capable of operating at high (~30 MV/m) gradient, which puts limits on both surface roughness and field emission. This presentation will discuss the trade space for such a cathode/laser combination, and detail a new collaborative program among a variety of institutions to investigate it. PB - JACoW Publishing CP - Geneva, Switzerland SP - 281 EP - 284 KW - cathode KW - gun KW - electron KW - emittance KW - photon DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-TUYD3 UR - https://jacow.org/napac2022/papers/tuyd3.pdf ER - TY - CONF AU - Pierce, C.M. AU - Bazarov, I.V. AU - Durham, D.B. AU - Filippetto, D. AU - Kachwala, A.H. AU - Karkare, S.S. AU - Maxson, J.M. AU - Minor, A. AU - Riminucci, F. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Towards High Brightness from Plasmon-Enhanced Photoemitters J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Plasmonic cathodes, whose nanoscale features may locally enhance optical energy from the driving laser trapped at the vacuum interface, have emerged as a promising technology for improving the brightness of metal cathodes. A six orders of magnitude improvement [1] in the non-linear yield of metals has been experimentally demonstrated through this type of nanopatterning. Further, nanoscale lens structures may focus light below its free-space wavelength offering multiphoton photoemission from a region near 10 times smaller [2] than that achievable in typical photoinjectors. In this proceeding, we report on our efforts to characterize the brightness of two plasmonic cathode concepts: a spiral lens and a nanogroove array. We demonstrate an ability to engineer and fabricate nanoscale patterned cathodes by comparing their optical properties with those computed with a finite difference time domain (FDTD) code. The emittance and nonlinear yield of the cathodes are measured under ultrafast laser irradiation. Finally, prospects of this technology for the control and acceleration of charged particle beams are discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 285 EP - 288 KW - cathode KW - electron KW - laser KW - interface KW - emittance DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-TUYD4 UR - https://jacow.org/napac2022/papers/tuyd4.pdf ER - TY - CONF AU - Huebl, A. AU - Lehé, R. AU - Mitchell, C.E. AU - Qiang, J. AU - Ryne, R.D. AU - Sandberg, R.T. AU - Vay, J.-L. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Next Generation Computational Tools for the Modeling and Design of Particle Accelerators at Exascale J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Particle accelerators are among the largest, most complex devices. To meet the challenges of increasing energy, intensity, accuracy, compactness, complexity and efficiency, increasingly sophisticated computational tools are required for their design and optimization. It is key that contemporary software take advantage of the latest advances in computer hardware and scientific software engineering practices, delivering speed, reproducibility and feature composability for the aforementioned challenges. A new open source software stack is being developed at the heart of the Beam pLasma Accelerator Simulation Toolkit (BLAST) by LBNL and collaborators, providing new particle-in-cell modeling codes capable of exploiting the power of GPUs on Exascale supercomputers. Combined with advanced numerical techniques, such as mesh-refinement, and intrinsic support for machine learning, these codes are primed to provide ultrafast to ultraprecise modeling for future accelerator design and operations. PB - JACoW Publishing CP - Geneva, Switzerland SP - 302 EP - 306 KW - simulation KW - GPU KW - software KW - space-charge KW - plasma DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-TUYE2 UR - https://jacow.org/napac2022/papers/tuye2.pdf ER - TY - CONF AU - Qiang, J. AU - Ji, F. AU - Raubenheimer, T.O. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Beam Dynamics Optimization of a Low Emittance Photoinjector Without Buncher Cavities J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The photoinjector plays an important role in generating high brightness low emittance electron beam for x-ray free electron laser applications. In this paper, we report on beam dynamics optimization study of a low emittance photoinjector based on a proposed superconducting gun without including any buncher cavities. Multi-objective optimization with self-consistent beam dynamics simulations was employed to attain the optimal Pareto front. PB - JACoW Publishing CP - Geneva, Switzerland SP - 615 EP - 618 KW - emittance KW - cavity KW - electron KW - cathode KW - gun DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA01 UR - https://jacow.org/napac2022/papers/wepa01.pdf ER - TY - CONF AU - Ji, F. AU - Adolphsen, C. AU - Coy, R. AU - Ge, L. AU - Mayes, C.E. AU - Qiang, J. AU - Raubenheimer, T.O. AU - Xiao, L. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Beam Dynamics Studies on a Low Emittance Injector for LCLS-II-HE J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The SLAC High Energy upgrade of LCLS-II (LCLS-II-HE) will double the beam energy to 8 GeV, increasing the XFEL photon energy reach to about 13 keV. The energy reach can be extended to 20 keV if the beam emittance can be halved, which requires a higher gradient electron gun with a lower intrinsic emittance photocathode. To this end, the Low Emittance Injector (LEI) will be built that will run parallel to the existing LCLS-II Injector. The LEI design will be based on a state-of-the-art SRF gun with a 30 MV/m cathode gradient. The main goal is to produce transverse beam emittances of 0.1 mm-mrad for 100 pC bunch charges. This paper describes the beam dynamics studies on the design of the LEI including the simulations and multi-objective genetic algorithm (MOGA) optimizations. Performance with different injector layouts, cathode gradients, bunch charges and cathode mean transverse energies (MTEs) will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 619 EP - 622 KW - emittance KW - cathode KW - gun KW - solenoid KW - cavity DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA02 UR - https://jacow.org/napac2022/papers/wepa02.pdf ER - TY - CONF AU - Gamage, B.R. AU - Arbelaez, D. AU - Aschenauer, E.C. AU - Berg, J.S. AU - Ent, R. AU - Ferracin, P. AU - Morozov, V.S. AU - Rajput-Ghoshal, R. AU - Sabbi, G.L. AU - Satogata, T. AU - Savary, F. AU - Seryi, A. AU - Vedrine, P.N. AU - Witte, H. AU - Wittmer, W. AU - Zhang, Y. AU - Zlobin, A.V. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - High-Field Design Concept for Second Interaction Region of the Electron-Ion Collider J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Efficient realization of the scientific potential of the Electron Ion Collider (EIC) calls for addition of a future second Interaction Region (2nd IR) and a detector in the RHIC IR8 region after the EIC project completion. The second IR and detector are needed to independently cross-check the results of the first detector, and to provide measurements with complementary acceptance. The available space in the existing RHIC IR8 and maximum fields achievable with NbTi superconducting magnet technology impose constraints on the 2nd IR performance. Since commissioning of the 2nd IR is envisioned in a few years after the first IR, such a long time frame allows for more R&D on the Nb₃Sn magnet technology. Thus, it could provide a potential alternative technology choice for the 2nd IR magnets. Presently, we are exploring its potential benefits for the 2nd IR performance, such as improvement of the luminosity and acceptance, and are also assessing the technical risks associated with use of Nb₃Sn magnets. In this paper, we present the current progress of this work. PB - JACoW Publishing CP - Geneva, Switzerland SP - 648 EP - 650 KW - electron KW - collider KW - luminosity KW - proton KW - detector DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA15 UR - https://jacow.org/napac2022/papers/wepa15.pdf ER - TY - CONF AU - DeGraff, B. AU - Armstrong, R. AU - Denison, J. AU - Howell, M.P. AU - Kim, S.-H. AU - Montierth, D. AU - Pinion, L. AU - Williamson, M.D. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Spallation Neutron Source Cryogenic Moderator System Helium Gas Analysis System J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL) operates the Cryogenic Moderator System (CMS). The CMS comprises a 20-K helium refrigerator and three helium to hydrogen heat exchangers in support of hydrogen cooled spallation moderation vessels. This system uses vessels filled with activated carbon as the final major component to remove oil vapor from the compressed helium in the cryogenic cold box. SNS uses a LINDE multi-component gas analyzer to detect the presence of contaminants in the warm helium flow upstream of the cold box including aerosolized oil vapor. The design challenges of installing and operating this analyzer on the CMS system due to normal system operating pressures will be discussed. The design, fabrication, installation, commissioning, and initial results of this system operation will be presented. Future upgrades to the analyzer system will also be discussed. PB - JACoW Publishing CP - Geneva, Switzerland SP - 699 EP - 701 KW - cryogenics KW - MMI KW - neutron KW - operation KW - target DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA32 UR - https://jacow.org/napac2022/papers/wepa32.pdf ER - TY - CONF AU - Luo, Y. AU - Berg, J.S. AU - Blaskiewicz, M. AU - Hao, Y. AU - Huang, H. AU - Montag, C. AU - Morozov, V.S. AU - Ptitsyn, V. AU - Qiang, J. AU - Satogata, T. AU - Willeke, F.J. AU - Xu, D. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - {6-D} Element-by-Element Particle Tracking with Crab Cavity Phase Noise and Weak-Strong Beam-Beam Interaction for the Hadron Storage Ring of the Electron-Ion Collider J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The Electron Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosity up to 10³⁴ cm⁻² s⁻¹ in the center mass energy range of 20 to 140 GeV. Crab cavities are used to compensate the geometric luminosity due to a large crossing angle in the EIC. However, it was found that the phase noise in crab cavities will generate a significant emittance growth for hadron beams and its tolerance from analytical calculation is very small for the Hadron Storage Ring (HSR) of the EIC. In this paper, we report on 6-D symplectic particle tracking to estimate the proton emittance growth rate, especially in the vertical plane, for the HSR with weak-strong beam-beam and other machine or lattice errors. PB - JACoW Publishing CP - Geneva, Switzerland SP - 809 EP - 812 KW - emittance KW - cavity KW - simulation KW - proton KW - electron DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA75 UR - https://jacow.org/napac2022/papers/wepa75.pdf ER - TY - CONF AU - Xu, D. AU - Hao, Y. AU - Luo, Y. AU - Montag, C. AU - Qiang, J. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - Extended Soft-Gaussian Code for Beam-Beam Simulations J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - Large ion beam emittance growth is observed in strong-strong beam-beam simulations for the Electron-Ion Collider (EIC). As we know, the Particle-In-Cell (PIC) solver is subject to numerical noises. As an alternative approach, an extended soft-Gaussian code is developed with help of Hermite polynomials in this paper. The correlation between the horizontal and the vertical coordinates of macro-particles is considered. The 3rd order center moments are also included in the beam-beam force. This code could be used as a cross check tool of PIC based strong-strong simulation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 830 EP - 832 KW - simulation KW - electron KW - collider KW - electromagnetic-fields KW - proton DA - 2022/10 PY - 2022 SN - 2673-7000 SN - 978-3-95450-232-5 DO - doi:10.18429/JACoW-NAPAC2022-WEPA83 UR - https://jacow.org/napac2022/papers/wepa83.pdf ER -