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Gamma ray facilities at the University of Maryland cyclotronA special beam line was set up in a separate shielded experimental room to provide a low background station for gamma-ray measurements at the University of Maryland cyclotron. The transmitted beam leaving the target is gathered in by a magnetic quadrupole lens located 1.8 m further downstream and focused on a Faraday cup located on the far side of the 2.5 m thick concrete shielding wall of the experimental room. A software computer program permits timing information ot be obtained using the cyclotron beam fine structure as a time reference for the observed gamma-ray events. Measurements indicate a beam fine structure width of less than 1.2 nanoseconds repeated, for example, in the case of 140 MeV alpha particles every 90 nanoseconds. Twelve contiguous time channels of adjustable width may be set as desired with reference to the RF signal. This allows the creation of 12 separate 8192 channel analyzers.
Document ID
19780024065
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hornyak, W. F.
(Maryland Univ. College Park, MD, United States)
Date Acquired
August 9, 2013
Publication Date
August 1, 1978
Publication Information
Publication: NASA. Goddard Space Flight Center Gamma Ray Spectry. in Astrophys.
Subject Category
Ground Support Systems And Facilities (Space)
Accession Number
78N32008
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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