arXiv - PHYS - Accelerator Physics最新文献

Exploring the Potential of Resonance Islands and Bent Crystals for a Novel Slow Extraction from Circular Hadron Accelerators 探索共振岛和弯曲晶体从环形强子加速器中缓慢提取新物质的潜力

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-17 DOI: arxiv-2409.10928

D. E. Veres, G. Franchetti, M. Giovannozzi

引用次数: 0

Space Charge and Future Light Sources 空间充电和未来光源

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-13 DOI: arxiv-2409.08637

S. A. Antipov, V. Gubaidulin, I. Agapov, E. C. Cortes Garcia, A. Gamelin

引用次数: 0

Beam Dynamics simulations for ERDC project -- SRF linac for industrial use ERDC 项目的光束动力学模拟 -- 用于工业用途的 SRF 直列加速器

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-11 DOI: arxiv-2409.07561

N. SolyakFermilab, Batavia, USA, I. GoninFermilab, Batavia, USA, A. SainiFermilab, Batavia, USA, V. YakovlevFermilab, Batavia, USA, C. EdwardsFermilab, Batavia, USA, J. C. ThangarajFermilab, Batavia, USA, R. KostinEuclid Techlabs LLC, C. JingEuclid Techlabs LLC

{"title":"Beam Dynamics simulations for ERDC project -- SRF linac for industrial use","authors":"N. SolyakFermilab, Batavia, USA, I. GoninFermilab, Batavia, USA, A. SainiFermilab, Batavia, USA, V. YakovlevFermilab, Batavia, USA, C. EdwardsFermilab, Batavia, USA, J. C. ThangarajFermilab, Batavia, USA, R. KostinEuclid Techlabs LLC, C. JingEuclid Techlabs LLC","doi":"arxiv-2409.07561","DOIUrl":"https://doi.org/arxiv-2409.07561","url":null,"abstract":"Compact conductively cooled SRF industrial linacs can provide unique\u0000parameters of the electron beam for industrial applications. (up to 10MeV,\u00001MW). For ERDC project we designed normal conducting RF injector with thermal\u0000RF gridded gun integrated in first cell of multi-cell cavities. For design of\u0000the RF gun we used MICHELLE software to simulate and optimize parameters of the\u0000beam. Output file was converted to ASTRA format and most beam dynamic\u0000simulations in multi-cell normal conducting cavity and cryomodule were\u0000performed by using ASTRA software. For cross-checking we compare results of\u0000MICHELLE and AS-TRA in first few cells. At the end of injector beam reach\u0000~250keV energy which allow to trap bunch in acceleration regime without losses\u0000in TESLA like 1.3 GHz cavity. Short solenoid at the end of injector allow to\u0000regulate transverse beam size in cryomodule to match beam to extraction system\u0000and also reduce charge losses in accelerator.","PeriodicalId":501318,"journal":{"name":"arXiv - PHYS - Accelerator Physics","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Realizing Steady-State Microbunching with Optical Stochastic Crystallization 利用光学随机结晶实现稳态微束化

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06619

M. WallbankFermi National Accelerator Laboratory, J. JarvisFermi National Accelerator Laboratory

{"title":"Realizing Steady-State Microbunching with Optical Stochastic Crystallization","authors":"M. WallbankFermi National Accelerator Laboratory, J. JarvisFermi National Accelerator Laboratory","doi":"arxiv-2409.06619","DOIUrl":"https://doi.org/arxiv-2409.06619","url":null,"abstract":"Optical Stochastic Cooling (OSC) is a state-of-the-art beam cooling\u0000technology first demonstrated in 2021 at the IOTA storage ring at Fermilab's\u0000FAST facility. A second phase of the research program is planned to run in\u0000early 2025 and will incorporate an optical amplifier to enable significantly\u0000increased cooling rates and greater operational flexibility. In addition to\u0000beam cooling, an OSC system can be configured to enable advanced control over\u0000the phase space of the beam. An example operational mode could enable\u0000crystallization, where the particles in a bunch are locked into a\u0000self-reinforcing, regular microstructure at the OSC fundamental wavelength; we\u0000refer to this as Optical Stochastic Crystallization (OSX). OSX represents a new\u0000path toward Steady-State Microbunching (SSMB), which may enable light sources\u0000combining the high brightness of a free-electron laser with the high repetition\u0000rate of a storage ring. Such a source has applications from the terahertz to\u0000the extreme ultraviolet (EUV), including high-power EUV generation for\u0000semiconductor lithography. This contribution will discuss the status of the OSC\u0000experimental program and its potential to achieve the first demonstration of\u0000SSMB during the upcoming experimental run.","PeriodicalId":501318,"journal":{"name":"arXiv - PHYS - Accelerator Physics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards Agentic AI on Particle Accelerators 在粒子加速器上实现代理人工智能

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-10 DOI: arxiv-2409.06336

Antonin Sulc, Thorsten Hellert, Raimund Kammering, Hayden Houscher, Jason St. John

引用次数: 0

Harmonic analysis of non-stationary signals with application to LHC beam measurements 应用于大型强子对撞机光束测量的非稳态信号谐波分析

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-09 DOI: arxiv-2409.05406

G. Russo, G. Franchetti, M. Giovannozzi, E. H. Maclean

引用次数: 0

Cs-O$_2$-Li as enhanced NEA surface layer with increased lifetime for GaAs photocathodes 将 Cs-O$_2$-Li 作为增强型 NEA 表面层，提高砷化镓光电阴极的使用寿命

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-06 DOI: arxiv-2409.04319

Maximilian Herbert, Tobias Eggert, Joachim Enders, Markus Engart, Yuliya Fritzsche, Maximilian Meier, Julian Schulze, Vincent Wende

{"title":"Cs-O$_2$-Li as enhanced NEA surface layer with increased lifetime for GaAs photocathodes","authors":"Maximilian Herbert, Tobias Eggert, Joachim Enders, Markus Engart, Yuliya Fritzsche, Maximilian Meier, Julian Schulze, Vincent Wende","doi":"arxiv-2409.04319","DOIUrl":"https://doi.org/arxiv-2409.04319","url":null,"abstract":"GaAs-based photocathodes are the only viable source capable of providing\u0000spin-polarized electrons for accelerator applications. This type of\u0000photocathode requires a thin surface layer, in order to achieve negative\u0000electron affinity (NEA) for efficient photo-emission. However, this layer is\u0000vulnerable to environmental and operational effects, leading to a decay of the\u0000quantum efficiency $eta$ characterized by a decay constant or lifetime $tau$.\u0000In order to increase $tau$, additional agents can be introduced during the\u0000activation procedure to improve the chemical robustness of the surface layer.\u0000This paper presents the results of recent research on Li as enhancement agent\u0000for photocathode activation using Cs and O$_2$, forming Cs-O$_2$-Li as enhanced\u0000NEA layer. Measurements yielded an increase in lifetime by a factor of up to 19\u0000$pm$ 2 and an increase in extracted charge by a factor of up to 16.5 $pm$\u00002.4, without significant reduction of $eta$. This performance is equal to or\u0000better than that reported for other enhanced NEA layers so far.","PeriodicalId":501318,"journal":{"name":"arXiv - PHYS - Accelerator Physics","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learning for Reducing Noise in RF Control Signals at Industrial Accelerators 机器学习降低工业加速器射频控制信号中的噪声

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-05 DOI: arxiv-2409.03931

M. Henderson, J. P. Edelen, J. Einstein-Curtis, C. C. Hall, J. A. Diaz Cruz, A. L. Edelen

引用次数: 0

Thermal Emittance Isolation by Cathode Retraction 通过阴极回缩实现热辐射隔离

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-05 DOI: arxiv-2409.03499

Benjamin Sims, John W. Lewellen, Xu Ting, Sergey V. Baryshev

{"title":"Thermal Emittance Isolation by Cathode Retraction","authors":"Benjamin Sims, John W. Lewellen, Xu Ting, Sergey V. Baryshev","doi":"arxiv-2409.03499","DOIUrl":"https://doi.org/arxiv-2409.03499","url":null,"abstract":"In this work, a combination of cathode retraction and two-slit emittance\u0000measurement technique is proposed as an advanced means to individually modify\u0000emittance growth components, specifically, rf injector fringe fields, to\u0000isolate and directly measure the thermal emittance, the fundamental beam\u0000emittance metric for an electron beam. A case study of the LCLS-II-HE Low\u0000Emittance Injector (LEI), a state-of-the-art superconducting radiofrequency\u0000(SRF) gun, designed for LCLS-II HE upgrade is used to showcase the power of the\u0000two-slit technique. Particularly, it is demonstrated that generating a high\u0000resolution phase-space distribution map, dominated by the intrinsic emittance\u0000of the electron bunch, is possible. This result goes beyond the normal\u0000single-parameter distribution characterizations (e.g. RMS emittance and Twiss\u0000parameters) provided by the solenoid scan. One key feature making this\u0000technique work (and in the end practically useful) is the ability to retract\u0000the cathode, because it provides the ability to compensate for radiofrequency\u0000(rf) de-focusing. It is demonstrated how the cathode retraction can serve as an\u0000additional optimisation tool for tailoring the routine performance of the\u0000photoinjector. We posit that a variable position cathode may be a useful method\u0000for optimizing photoinjector performance across multiple parameters regimes.","PeriodicalId":501318,"journal":{"name":"arXiv - PHYS - Accelerator Physics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and tolerance study of the rectilinear cooling channel for a muon collider μ介子对撞机直线冷却通道的性能和容差研究

arXiv - PHYS - Accelerator Physics Pub Date : 2024-09-04 DOI: arxiv-2409.02613

Ruihu Zhu, Chris Rogers, Jiancheng Yang, He Zhao, Cheng Guo, Jiangdong Li

引用次数: 0