Title :
Calibration of the beam-position monitor system for the SLAC PEP-II B Factory
Author :
Johnson, R. ; Smith, S. ; Kurita, N. ; Kishiyama, K. ; Hinkson, J.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
The beam-position monitors (BPM) for the PEP-II B Factory consist of four 1.5-cm diameter button style pickups mounted on the diagonals of the quadrupole vacuum chambers. Before installation of the vacuum chambers in the quadrupole assemblies, the electrical center of the BPMs is measured with respect to the mechanical center in a calibration test stand. In this paper the calibrations test stand is described and the precision and accuracy of the calibrations are presented. After installation of the quadrupole assemblies in the PEP-II tunnel, the passive attenuation for each channel of the system is measured to preserve the accuracy of the calibration. Finally, the active electronics includes an on-board calibrator. Results for these portions of the calibration are presented
Keywords :
accelerator magnets; calibration; colliding beam accelerators; electromagnets; electron accelerators; particle beam diagnostics; position measurement; storage rings; 1.5 cm; BPM; SLAC PEP-II B Factory; beam-position monitor calibration; button style pickups; electrical center; passive attenuation; quadrupole assemblies; quadrupole vacuum chambers; Assembly; Attenuation measurement; Calibration; Electric variables measurement; Extraterrestrial measurements; Mechanical variables measurement; Monitoring; Position measurement; Production facilities; Testing;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.751124
