Author: Li, N.
Paper Title Page
THPDP033 Multi-User Virtual Accelerator at HEPS for High-Level Application Development and Beam Commissioning 1388
 
  • P. Zhu, Y. Jiao, J.Y. Li, N. Li, C. Meng, Y.M. Peng, G. Xu
    IHEP, Beijing, People’s Republic of China
  • X.H. Lu
    IHEP CSNS, Guangdong Province, People’s Republic of China
  
  At High En­ergy Pho­ton Source (HEPS), a multi-user vir­tual ac­cel­er­a­tor sys­tem has been de­vel­oped for test­ing the high-level ap­pli­ca­tion (HLA) and sim­u­lat­ing the ef­fects of var­i­ous er­rors on the re­sults of beam com­mis­sion­ing. The vir­tual ac­cel­er­a­tor is based on the Pya­pas de­vel­op­ment frame­work for HLA and is de­signed using a client/server (C/S) ar­chi­tec­ture. It uses Ocelot with cus­tom mul­ti­pole field mod­els for phys­i­cal cal­cu­la­tions and sup­ports error sim­u­la­tion for var­i­ous mag­net and beam in­stru­men­ta­tion and di­ag­nos­tics de­vices. Cal­cu­la­tion re­sults are sent ex­ter­nally through the EPICS PV chan­nel. The multi-user vir­tual ac­cel­er­a­tor sys­tem was de­vel­oped to meet the needs of dif­fer­ent users within the same net­work seg­ment who need to si­mul­ta­ne­ously call the vir­tual ac­cel­er­a­tor for soft­ware de­bug­ging and sim­u­la­tion re­search. Each user can open a unique vir­tual ac­cel­er­a­tor with­out af­fect­ing oth­ers, and can also start dif­fer­ent vir­tual ac­cel­er­a­tors for dif­fer­ent re­search con­tent. The num­ber of vir­tual ac­cel­er­a­tors opened is not lim­ited. The op­er­a­tion of the en­tire vir­tual ac­cel­er­a­tor sys­tem can be eas­ily switched on and off like open­ing an app, greatly fa­cil­i­tat­ing user use. This ar­ti­cle pro­vides a de­tailed de­scrip­tion of the de­sign con­cept and im­ple­men­ta­tion of the multi-user vir­tual ac­cel­er­a­tor sys­tem.  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP033  
About • Received ※ 11 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 13 December 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
THPDP034 The Application of Pyapas in Linac Beam Commissioning at HEPS 1391
 
  • X.H. Lu
    IHEP CSNS, Guangdong Province, People’s Republic of China
  • H.F. Ji, Y. Jiao, J.Y. Li, N. Li, C. Meng, Y.M. Peng, G. Xu, Y.L. Zhao, P. Zhu
    IHEP, Beijing, People’s Republic of China
  
  The beam com­mis­sion­ing of the Linac at High En­ergy Pho­ton Source (HEPS) started on March 9th this year. High-level ap­pli­ca­tions (HLAs) based on Pya­pas were suc­cess­fully ap­plied to the beam com­mis­sion­ing. To meet the beam com­mis­sion­ing re­quire­ments of the Linac, a se­ries of HLAs were de­vel­oped, in­clud­ing physics-based con­trol ap­pli­ca­tion, PR tar­get data analy­sis ap­pli­ca­tion, emit­tance mea­sure­ment ap­pli­ca­tion, en­ergy and en­ergy spread mea­sure­ment ap­pli­ca­tion, ac­cel­er­a­tion phase scan­ning ap­pli­ca­tion, BBA and feed­back orbit cor­rec­tion ap­pli­ca­tion. Be­fore ap­ply­ing these ap­pli­ca­tions to real beam com­mis­sion­ing, they were tested thor­oughly on a vir­tual ac­cel­er­a­tor to en­sure the cor­rect­ness of the al­go­rithms and the sta­bil­ity of the ap­pli­ca­tion op­er­a­tion. Thanks to the re­peated test­ing on the vir­tual ac­cel­er­a­tor, the HLAs of the Linac per­formed well after being put on­line, help­ing the beam com­mis­sion­ing op­er­a­tors to quickly achieve the full-line trans­mis­sion of the beam and op­ti­mize the pa­ra­me­ters to the ex­pected val­ues in a short time. This paper will pro­vide a de­tailed in­tro­duc­tion to the ap­pli­ca­tion of the rel­e­vant HLAs in the Linac beam com­mis­sion­ing at HEPS.  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-THPDP034  
About • Received ※ 11 October 2023 — Revised ※ 12 October 2023 — Accepted ※ 10 December 2023 — Issued ※ 14 December 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)