Gamma-Ray Imaging Spectrometer (GRIS) instrument and plans for serving SN 1987A
Conference
·
· AIP Conf. Proc.; (United States)
OSTI ID:6927350
The Gamma-Ray Imaging Spectrometer (GRIS) is a powerful second-generation high-resolution gamma-ray spectrometer. It consists of an array of seven large (typically >200 cm/sup 3/) n-type Germanium detectors surrounded by a thick (15 m) NaI active shield. Its energy range is 0.02 to 10 MeV. A new detector segmentation technique will be employed to reduce the detector background. The ..beta..-decay background component, which is expected to be dominant in the 0.2--2 MeV range, will be suppressed by roughly a factor of 20. The 3sigma GRIS sensitivity to a narrow Fe line at 847 keV (expected to be the most intense from a supernova) will be approx.2 x 10/sup -4/ photons/cm/sup 2/-s for an 8 hr observation of the LMC over Alice Springs, Australia with unsegmented detectors. The instrument in simplified form will be ready to observe SN 1987A in early 1988.
- Research Organization:
- Goddard Space Flight Center, Greenbelt, MD 20771
- OSTI ID:
- 6927350
- Report Number(s):
- CONF-871245-
- Conference Information:
- Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 170:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AIRSHIPS
ASTRONOMY
BALLOONS
DESIGN
DIAGRAMS
ENERGY RANGE
ENERGY RESOLUTION
ENGINEERING DRAWINGS
ERUPTIVE VARIABLE STARS
EXPERIMENT PLANNING
GALAXIES
GAMMA ASTRONOMY
GAMMA SPECTROMETERS
GE SEMICONDUCTOR DETECTORS
KEV RANGE
MAGELLANIC CLOUDS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
NAI DETECTORS
NASA
NATIONAL ORGANIZATIONS
PLANNING
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SEMICONDUCTOR DETECTORS
SOLID SCINTILLATION DETECTORS
SPECTROMETERS
STARS
SUPERNOVAE
US ORGANIZATIONS
VARIABLE STARS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AIRSHIPS
ASTRONOMY
BALLOONS
DESIGN
DIAGRAMS
ENERGY RANGE
ENERGY RESOLUTION
ENGINEERING DRAWINGS
ERUPTIVE VARIABLE STARS
EXPERIMENT PLANNING
GALAXIES
GAMMA ASTRONOMY
GAMMA SPECTROMETERS
GE SEMICONDUCTOR DETECTORS
KEV RANGE
MAGELLANIC CLOUDS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
NAI DETECTORS
NASA
NATIONAL ORGANIZATIONS
PLANNING
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SEMICONDUCTOR DETECTORS
SOLID SCINTILLATION DETECTORS
SPECTROMETERS
STARS
SUPERNOVAE
US ORGANIZATIONS
VARIABLE STARS