Title :
A beam position detector for SSC collider rings
Author :
Martin, Donald J.
Author_Institution :
Superconducting Super Collider Lab., Dallas, TX, USA
Abstract :
A short-circuited stripline position detector which would operate in flowing liquid helium has been prototyped for the Superconducting Super Collider (SSC) main rings. Each sensing device, at 968 locations in each ring, consists of four 15-cm-long, 50- Omega strip transmission lines. To maximize signal-to-noise ratio and reduce orthogonal sensitivity, each electrode subtends 70 degrees of the 37-mm aperture. Electrical to mechanical centers are proposed to be maintained within a 0.15-mm radius by accurate tooling, so individual calibration would not be required. A radiation-resistant, impedance-matched vacuum feedthrough which is integral to the output signal cable is being considered. Because of the large quantity of detectors and inherent difficulty of replacement, reliability and manufacturability received the greatest concern during the design.<>
Keywords :
particle beam diagnostics; proton accelerators; storage rings; synchrotrons; SSC collider rings; Superconducting Super Collider; beam position detector; impedance-matched vacuum feedthrough; liquid He; orthogonal sensitivity; output signal cable; short-circuited stripline position detector; signal-to-noise ratio; strip transmission lines; Apertures; Colliding beam devices; Detectors; Electrodes; Helium; Prototypes; Signal to noise ratio; Stripline; Strips; Superconducting transmission lines;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.164554
