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U.S. Department of Energy
Office of Scientific and Technical Information

Triggered streamer chamber for the study of relativistic heavy ion collisions

Technical Report ·
OSTI ID:6642484
Design studies and tests have been carried out to develop the streamer chamber into a powerful facility for the study of relativistic heavy ion collisions. The streamer chamber is a visual detector which is triggerable and sensitive to charged particles over a 4..pi.. geometry, with a high efficiency for large multiparticle events. The developmental work has encompassed both hardware and software systems for the streamer chamber facility, and has been focused in three areas: (1) target design, in particular, optimization of the target thickness to effectively study collisions with heavy high charge projectile nuclei; (2) design of a trigger system to provide selection between peripheral and central collisions between nuclei; and (3) development of a one view geometric fitting program to reconstruct interaction events having a high particle multiplicity. Results are presented of an exploratory experiment of relativistic heavy ion collisions. Total charged particle multiplicity spectra are presented over a range of energy for several combinations of projectile and target nuclei. From these spectra particle production cross-sections are derived. Also presented here are the multiplicity and cross-section of pions produced in these collisions, together with momentum and angular distributions.
Research Organization:
California Univ., Riverside (USA)
DOE Contract Number:
AT03-76ER70107
OSTI ID:
6642484
Report Number(s):
UCR-34-P107-253
Country of Publication:
United States
Language:
English