Title :
The RHIC tune measurement system
Author :
Cameron, P. ; Connolly, R. ; Cupolo, J. ; Drees, A. ; Ryan, W. ; Shea, T. ; Sikora, R. ; Trbojevic, D. ; Tsoupas, N.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
Each of the four fractional betatron tunes of RHIC (two planes, two rings) is measured with a transverse beam kicker and dedicated beam position monitor (BPM). A 1-5 kV pulse is generated by a fast FET switch, passed through a stripline kicker, attenuated, and returned to the instrumentation control room (ICR) for monitoring. When pulsed at 3 kV, the four-meter long kicker gives a gold beam at injection (γ=12.6) an angular kick of 11 μrad resulting in a betatron amplitude of 0.8 mm at the BPM (σbeam=4.3 mm). A single bunch is kicked a few times and then measured for several hundred turns. A fast Fourier transform (FFT) of the position data gives the tune
Keywords :
colliding beam accelerators; field effect transistor switches; ion accelerators; nuclear electronics; particle beam diagnostics; storage rings; 3 kV; 5 kV; RHIC tune measurement system; betatron amplitude; dedicated beam position monitor; fast FET switch; fast Fourier transform; four-meter long kicker; fractional betatron tunes; instrumentation control room; stripline kicker; transverse beam kicker; Acceleration; FETs; Gold; Instruments; Monitoring; Position measurement; Pulse generation; Pulsed power supplies; Stripline; Switches;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.794391
