Author: Yang, F.
Paper Title Page
MOPFI029 The Construction Progress of Beijing Radioactive Ion-beam Facility 345
 
  • T.J. Zhang, Shizhong. An, B.Q. Cui, Z.G. Li, Y.L. Lu, C.H. Peng, F. Yang
    CIAE, Beijing, People's Republic of China
  
  The Bei­jing Ra­dioac­tive Ion-Beam Fa­cil­ity (BRIF) is being con­structed at CIAE. The pro­ject con­sists of a 100 MeV high in­ten­sity cy­clotron CY­CIAE-100, an ISOL sys­tem with a mass res­o­lu­tion of 20000, and a su­per­con­duct­ing booster. The con­struc­tion of the build­ing was started on April 28, 2011 and the roof was sealed on Jan. 16, 2012. The on-site in­stal­la­tion con­di­tions have been ready since Sept. 27, 2012. Up to now, the fab­ri­ca­tion of all major com­po­nents for CY­CIAE-100 have been com­pleted, in­clud­ing the main mag­net sys­tem, the RF sys­tem, ion source and in­jec­tion, main vac­uum, etc. The equip­ment fab­ri­ca­tion for the ISOL sys­tem has been com­pleted and mag­netic map­ping and shim­ming is being per­formed on the large-scale analy­sis mag­net. The fab­ri­ca­tion of the major com­po­nents for the su­per­con­duct­ing booster has been ac­com­plished, and the work on cop­per-nio­bium sput­ter­ing is under way. At pre­sent, the in­stal­la­tion and as­sem­bly is in full swing and the beam com­mis­sion­ing is to pre­dicted to be fin­ished in mid 2013. Tak­ing ad­van­tage of the ex­pe­ri­ences ac­cu­mu­lated on the CRM cy­clotron with beam up to 430 uA, it is likely that the first beams of 100 MeV can be achieved by the end of 2013.  
 
THPFI022 The M-C Application in Designing Tailored Cryopump Used in Cyciae-100 Cyclotron 3342
 
  • S.P. Zhang, Z.G. Li, G.F. Pan, J.S. Xing, F. Yang, T.J. Zhang
    CIAE, Beijing, People's Republic of China
  
  A com­pact high in­ten­sity cy­clotron CY­CIAE-100 was se­lected as the dri­ver for the Bei­jing Ra­dioac­tive Ion Fa­cil­ity (BRIF). A pres­sure of 5×10-8 mbar is re­quired to achieve ac­cept­able beam losses in the CY­CIAE-100 cy­clotron. As the ex­ist­ing ports on the cy­clotron val­ley are in­suf­fi­cient to pro­vide enough pump­ing speed using com­mer­cially avail­able pumps, two tai­lored cry­opan­els with a pump­ing speed of 60000 l/s for each are de­signed. Based on the Monte-Carlo method, a math­e­mat­i­cal model of mol­e­c­u­lar move­ment and col­li­sion be­tween the pan­els and their shield was de­vel­oped. The ratio of mol­e­c­u­lar re­flected to the baf­fle to mol­e­c­u­lar pass­ing through the baf­fle is the stick­ing prob­a­bil­ity on the pan­els. When tak­ing the trans­mis­sion prob­a­bil­ity of the chevron baf­fle, cap­ture co­ef­fi­cient of cry­opanel can be cal­cu­lated. It could pro­vide a ref­er­ence to de­sign the cry­opanel shape and its con­den­sa­tion area.