Wide range, permanent magnet Compton spectrometer

Conference · Fri Jun 12 04:00:00 EDT 1992

OSTI ID:10162383

Sale, K E; Kammeraad, J

We are using a Sm-Co based permanent magnet spectrometer to analyze Compton electrons ejected from a Be converter foil that is illuminated by a gamma-ray beam. The distance along the focal plane at which a mono-energetic electron beam entering the spectrometer will cross the focal plane is proportional to the square root of the electron momentum. This design achieves a very broad range of energies that are analyzed (from momentum of about 1 MeV/c up to 30 MeV/c) while maintaining good energy resolution (the electron momentum resolution is the larger of 0.1 MeV/c or 1% of the momentum). In addition this design has a fairly large acceptance. By restricting the angular acceptance of the spectrometer for the Compton electrons, incoming gamma-ray energies and ejected electron momenta are simply related. The electron optical properties of this spectrometer will be discussed as well as some aspects of the overall system design and testing. 8 refs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10162383
• Report Number(s): UCRL-JC--109170; CONF-920792--10; ON: DE92017312
• Country of Publication: United States
• Language: English

Related Subjects

440100
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
665300
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BERYLLIUM
COBALT ALLOYS
ELECTRON BEAMS
FOILS
GAMMA DETECTION
INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
MAGNETIC FIELDS
MAGNETIC SPECTROMETERS
MAGNETS
PERFORMANCE
QUADRUPOLAR CONFIGURATIONS
RADIATION INSTRUMENTATION
SAMARIUM ALLOYS
TRAJECTORIES