RHIC BPM System Modifications and Performance

Author

Satogata, T. ; Calaga, R. ; Cameron, P. ; Cerniglia, P. ; Cupolo, J. ; Curcio, A. ; Dawson, W.C. ; Degen, C. ; Gullotta, J. ; Mead, J. ; Michnoff, R. ; Russo, T. ; Sikora, R.

Author_Institution

Brookhaven National Laboratory, Upton, NY 11973– 5000, USA, email satogata@bnl.gov

fYear

2005

fDate

16-20 May 2005

Firstpage

2021

Lastpage

2023

Abstract

The RHIC beam position monitor (BPM) system provides independent average orbit and turn-by-turn (TBT) position measurements. In each ring, there are 162 measurement locations per plane (horizontal and vertical) for a total of 648 BPM planes in the RHIC machine. During 2003 and 2004 shutdowns, BPM processing electronics were moved from the RHIC tunnel to controls alcoves to reduce radiation impact, and the analog signal paths of several dozen modules were modified to eliminate gainswitching relays and improve signal stability. This paper presents results of improved system performance, including stability for interaction region beam-based alignment efforts. We also summarize performance of recently-added DSP profile scan capability, and improved million-turn TBT acquisition channels for 10 Hz triplet vibration, nonlinear dynamics, and echo studies.

Keywords

Digital signal processing; Extraterrestrial measurements; Firewire; Gain measurement; Histograms; Laboratories; Monitoring; Position measurement; Signal processing; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1590995

Filename

1590995