Design of S-band re-entrant cavity BPM

Design of S-band re-entrant cavity BPM 1 first-author 1 corresp Corresponding author. E-mail address: bgsun@ustc.edu.cn Corresponding author. E-mail address: bgsun@ustc.edu.cn bgsun@ustc.edu.cn 1 National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China National Synchrotron Radiation Laboratory, School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China An S-band cavity BPM is designed for a new injector for HLS (Hefei Light Source). It consists of two cavities that work on 2448 MHz: a re-entrant position cavity tuned to TM110 mode and a reference cavity tuned to TM010 mode. Cut-through waveguides are used as pickups to suppress the monopole signal. Simulations with different assumption of dimension change are performed to evaluate errors caused by mechanical error and give general tolerance. Design of electronics is given. Theoretical resolution of this design is 31 nm. Cavity BPM Re-entrant Cut-through waveguide MAFIA Omega3p AD8302 References LI Jihao , SUN Baogen , He Duohui , et al . HEP & NP (in Chinese) , 2007 , 31 ( 1 ): 96 - 100 . HEP & NP (in Chinese) Sargsyan V . Tesla Reports , 2004 , 3 : 1 - 9 . Tesla Reports Slaton T , Mazaheri G , Shintake T . Development of nanometer resolution C-band radio frequency beam position monitors in the final focus test beam . Proc. of LINAC98 . Chicago , 1998 : 911 - 913 . Development of nanometer resolution C-band radio frequency beam position monitors in the final focus test beam Lorenz R . Cavity beam position monitors , Proc. of 1998 Beam Instrumentation Workshop . SLAC , Stanford , 1998 : http://www.slac.stanford.edu/pubs/confproc/biw98/ . Cavity beam position monitors Maesaka H , Otake Y , Togowa K , et al . Beam position monitor at the SCSS prototype accelerator . Proc. of APAC 2007 , Indore : 387 - 389 . Beam position monitor at the SCSS prototype accelerator Walston S , Boogert S , Chung Carl , et al . Nucl Inst Met Phy Res A , 2007 , 578 : 1 - 22 . Nucl Inst Met Phy Res A Lunin A , Romanov G , Solyak N , et al . Design of a submicron resolution cavity BPM for the ILC main linac . Proc. of the DIPAC’07 , Venice , 2007 : 192 - 194 . Design of a submicron resolution cavity BPM for the ILC main linac Li Z . S-band cavity BPM for ILC . The 2005 ILC Physics and Detector Workshop and 2nd ILC Accelerator Workshop (Snowmass 2005) , 2005 : http://www.hep.ucl.ac.uk/ lc/T474/Documentation/ILCAW0901_TALK.PDF . S-band cavity BPM for ILC AD8302 Data Sheet : http://www.analog.com/static/imported-files/data_sheets/AD8302.pdf . AD8302 Data Sheet 10.13538/j.1001-8042/nst.20.133-139 Supported by the Natural Science Foundation of China (10875117) and the National "985 Project" (173123200402002) 2008-12-15 2009-06-20 2021-01-19 2009 Nuclear Science and Techniques 03 20