A Beam Based Method to Optimize the SBPM System

Jian Chen, Longwei Lai, Yongbin Leng, Tong Wu, Renxian Yuan, Schaa, Volker RW (Ed.), Satogata, Todd (Ed.)
2018
For the electron accelerator, it is hoped that the trajec-tory of the beam can pass through the magnetic center of the quadrupole to minimize the orbital motion caused by the instability of the power supply. The relative deviation between the magnetic center of quadrupole and the elec-tric center of adjacent BPM is measured by electron beam usually in various accelerator facilities. But for the stripline BPM (SBPM) system, in order to achieve the best performance, the beam trajectory should
more » ... ajectory should also need to pass through the electrical center of the SBPM system. In this paper, a beam based method to optimize the SBPM system was proposed, the intensity of the magnet power was scanned to change the beam position in two-dimension and combine the change trend of the sum signal of adjacent SBPM to find out the relative deviation of BPM electric center and mechanical center. Relevant beam experiment work on the Shanghai Soft X-ray free electron laser (SXFEL) and the benefit of this method will be addressed as well.
doi:10.18429/jacow-ipac2018-thpml062 fatcat:l3wrx35n75afrcoa4jxnwqnreu