title: A modular solid state detector for measuring high energy heavy ion fragmentation near the beam axis.
abstract: A multi-element solid state detector has been designed to measure fluences of fragments produced near the beam axis by high energy heavy ion beams in thick targets. The detector is compact and modular, so as to be readily reconfigured according to the range of fragment charges and energies to be measured. Preamplifier gain settings and detector calibrations are adjustable remotely under computer control. We describe the central detector, its associated detectors and electronics, triggering scheme, data acquisition and particle identification techniques, illustrated by data taken with 600 MeV/u 56Fe beams and thick polyethylene targets at the LBL Bevalac. The applications of this work to space radiation protection are discussed.
authors.affiliation: Lawrence Berkeley Laboratory, Berkeley, CA 94720, USA.
authors.forename: C J
authors.initials: CJ
authors.lastname: Zeitlin
authors.forename: K A
authors.initials: KA
authors.lastname: Frankel
authors.forename: W
authors.initials: W
authors.lastname: Gong
authors.forename: L
authors.initials: L
authors.lastname: Heilbronn
authors.forename: E J
authors.initials: EJ
authors.lastname: Lampo
authors.forename: R
authors.initials: R
authors.lastname: Leres
authors.forename: J
authors.initials: J
authors.lastname: Miller
authors.forename: W
authors.initials: W
authors.lastname: Schimmerling
mesh_terms: D000465:Algorithms; D002138:Calibration; D003201:Computers; D003359:Cosmic Radiation; D001330:Electronic Data Processing; D019471:Elementary Particle Interactions; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D007477:Ions; D007501:Iron; D010315:Particle Accelerators; D011095:Polyethylenes; D011834:Radiation Monitoring / Q000295:instrumentation*; D011874:Radiometry; D012825:Silicon; D012984:Software
chemical_list: D007477:Ions; D011095:Polyethylenes; D007501:Iron; D012825:Silicon