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Published July 1978 | Published
Journal Article Open

A Cosmic Ray Isotope Spectrometer


We describe a new instrument to be flown on ISEE-C which is optimized to measure the isotopic composition of solar and galactic cosmic rays with ~5 to ~250 MeV/nucleon. A mass resolution of ≾ 0.3 AMU should be achieved for all elements with charge Z ≤ 30.

Additional Information

© 1978 IEEE. Significant contributions to the implementation of the HIST experiment were made by the following organizations and individuals: MDH, Inc., in particular T. Harrington, Dr. J. H. Marshall, and C. Tulga, who designed the electronics and developed the hybrid circuits; J. Jodele was responsible for packaging and mechanical design; Time Zero Laboratories of Ball Brothers Research Corp. was responsible for instrument fabrication under D. Snyder; Halex, Inc. built the custom hybrid circuits; ORTEC, Inc. built the surface-barrier and matrix detectors; Kevex, Inc. furnished the Li-drifted detectors; the Bevalac staff and the Heckman/Greiner group at Lawrence Berkeley Laboratory made possible the ^(40)Ar and ^(56)Fe calibrations; the Kellogg Tandem Lab and the business staff at Caltech provided valuable support; and the staff and students of Caltech's Space Radiation Laboratory, particularly B. Gauld, N. Hickey, M. Smith, and J. Spalding, made many essential contributions. We also thank the ISEE Project Office at GSFC for their patience and support and G. Chapman of ONR for his valuable advice.

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