Magnetic alloy cores for the HIRFL-CSRm compressor cavity

Magnetic alloy cores for the HIRFL-CSRm compressor cavity 1 2 corresp first-author Corresponding author. E-mail address: lrmei@impcas.ac.cn Corresponding author. E-mail address: lrmei@impcas.ac.cn lrmei@impcas.ac.cn 1 1 1 1 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Four types of magnetic alloy cores, labeled as V1, V2, A1 and A2, were produced by Liyuan Corp. Ltd., for the radio frequency compression cavity of HIRFL-CSRm. In this work, their permeability, quality factor ( Q value) and shunt impedance were measured before installing them into the cavity. The results show that the V1, V2 and A2 have higher permeability and shunt impedance, and lower Q value, and are suitable to the radio frequency compression cavity. Magnetic alloy cores Permeability Q value Shunt impedance References Hülsmann P , Hutter G , Vinzenz W . The bunch compressor system for SIS18 at GSI . EPAC2004 , Lucerne , 2004 , 1165 - 1167 . The bunch compressor system for SIS18 at GSI Mori Y , Fujieda M , Koba K , et al . A New Type of RF cavity for High Intensity Proton Synchrotron using High Permeability Magnetic Alloy . EPAC98 , Stockholm , June 1998 . A New Type of RF cavity for High Intensity Proton Synchrotron using High Permeability Magnetic Alloy Mei L R , Xu Z , Yuan Y J , et al . Chin phys C , 2010 , 34 : 1132 - 1135 . Chin phys C Ohmori C , Ezura E , Fujieda M , et al . High Field-Gradient cavities loaded with Magnetic Alloys for Synchrotron . PAC99 , New York , April, 1999 , 413 - 417 . High Field-Gradient cavities loaded with Magnetic Alloys for Synchrotron Ohmoria C , Kanazawa M , Noda K , et al . Nucl Instrum Meth Phys Res A , 2005 , 547 : 249 - 258 . Nucl Instrum Meth Phys Res A Watanabe M , Chiba Y , Katayama T , et al . Nucl Instrum Meth Phys Res A , 2004 , 532 : 503 - 507 . Nucl Instrum Meth Phys Res A Saito K , Hirota J I , Noda F . Nucl Instrum Meth Phys Res A , 1998 , 402 : 1 - 13 . Nucl Instrum Meth Phys Res A Xu Z , Wang C X . HPLPB , 2005 , 17 : 1431 - 1433 . HPLPB 10.13538/j.1001-8042/nst.22.118-121 Supported by Innovation Research Community of National Natural Science Foundation of China (10921504) 2010-12-20 2011-04-20 2021-01-19 2011 Nuclear Science and Techniques 02 22