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TY - CPAPER AU - Ma, H.Z. AU - Cao, J.S. AU - Sui, Y.F. AU - Ye, Q. TI - Status of BPMs In the First Stage of Commissioning at CADS Injector I J2 - Proc. of International Beam Instrumentation Conference (IBIC2015), Melbourne, Australia, 13-17 September 2015 AB - The paper will introduce the status for BPMs in the first stage of commissioning at CADS (China Accelerator Driven Subcritical System) Injector I. The measurement principles and results of BPM at injector I are presented. The measurement of BPM is rigorous in the first medium energy beam transport line of CADS Injector I. To ensure the safety of test cryomodule, beam orbit should be corrected to the minimized region. The third order fitting way is used to calculate the position of beam for BPM non-linearity. And the average of data in the single pass window should improve the resolution. Then BBA of BPM can help tracking beam position accurately. Finally the interlock circuit of BPM is tested with the beam. PB - JACoW CY - Geneva, Switzerland SP - 390 EP - 392 KW - linac KW - status KW - detector KW - electronics KW - beam-transport DA - 2016/01 PY - 2016 SN - 978-3-95450-176-2 DO - 10.18429/JACoW-IBIC2015-TUPB028 UR - http://accelconf.web.cern.ch/AccelConf/IBIC2015/papers/tupb028.pdf ER -