Long ion chamber systems for the SLC

Author

Rolfe, J. ; Gearhart, R. ; Jacobsen, R. ; Jenkins, T. ; McComick, D. ; Nelson, R. ; Reagan, D. ; Ross, M.

Author_Institution

Linear Accel. Center, Stanford Univ., CA, USA

fYear

1989

fDate

20-23 Mar 1989

Firstpage

1531

Abstract

A Panofsky Long Ion Chamber (PLIC) is essentially a gas-filled coaxial cable, and has been used to protect the Stanford Linear Accelerator from damage caused by its electron beam, and also as a sensitive diagnostic tool. This old technology has been updated and has found renewed use in the SLC. PLIC systems have been installed as beam-steering aids in most parts of the SLC, and are part of the system that protects the SLC in several places from damage by errant beams. Pulses produced by radiation incident to the PLIC cable propagate along the cable, thus providing a time-resolved indication of the location of beam losses; they are particularly helpful in establishing and tuning beams. The PLIC is a relatively simple system that provides a real-time, easy to interpret display of beam losses induced by missteering and misfocusing. The overall SLC layout is presented, showing PLIC installations

Keywords

electron accelerators; ionisation chambers; linear accelerators; particle beam diagnostics; Panofsky Long Ion Chamber; SLC; Stanford Linear Accelerator; beam losses; beam-steering aids; damage; diagnostic tool; electron beam; errant beams; gas-filled coaxial cable; misfocusing; missteering; time-resolved indication; tuning; Coaxial cables; Electron beams; Iron; Leg; Linear accelerators; Linear particle accelerator; Magnetic materials; Magnets; Particle beams; Protection;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/PAC.1989.73503

Filename

73503