Title :
Beam-based BPM alignment
Author :
Talman, R. ; Malitsky, N.
Author_Institution :
Collider Accel. Dev. Dept., Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
An operational, beam-based, -measurement, control room procedure designed to steer the closed orbit through the effective (no steer) center of every quadrupole is described. Performance of the procedure is simulated using UAL (Unified Accelerator Libraries). Matching SNS hardware availability, quadrupole strengths are assumed to be trimmable, but only in families, not individually. The accuracy of the procedure is unaffected by geometric and/or electrical misalignment of BPM´s (beam position monitors) but calibration of their misalignments is a byproduct of the procedure. Some of the many possible failure mechanisms have been modeled, and have been found not to invalidate the procedure.
Keywords :
particle beam diagnostics; particle beam dynamics; proton accelerators; storage rings; SNS hardware matching; UAL; Unified Accelerator Libraries; beam position monitors; beam-based BPM alignment; control room procedure; failure mechanisms; quadrupole; Availability; Calibration; Colliding beam accelerators; Extraterrestrial measurements; Laboratories; Libraries; Neodymium; Neutrons; Packaging; Smoothing methods;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289766
