Scintillating Fibers and Their Use in the Cosmic Ray Isotope Spectrometer (CRIS) on the Advanced Composition Explorer (ACE)
Abstract
The Cosmic Ray Isotope Spectrometer (CRIS) experiment was launched aboard the NASA Advanced Composition Explorer satellite on August 25, 1997. The experimental objective of CRIS is to measure the isotopic composition of galactic cosmic ray nuclei for elements with charge 3 < Z < 28 over the energy range ∼50–500 MeV/nuc. The instrument consists of a scintillating fiber hodoscope to determine particle trajectory, and four stacks of silicon wafers for multiple dE/dx and Eₜₒₜ measurements. This instrument is the first to use scintillating fibers in space. The CRIS instrument has a large geometrical factor of ∼250 cm² sr. The spatial resolution obtained by the fiber hodoscope is ∼100 μm. The mass resolution achieved is ∼0.12 amu for Carbon and 0.30 amu for the heaviest isotopes measured. Mass histograms of selected isotopes are presented.
Additional Information
© 1998 AIP Publishing. This work was supported by NASA Contract NAS5-32626 and Grant #NAG-6912.Attached Files
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Additional details
- Eprint ID
- 53175
- Resolver ID
- CaltechAUTHORS:20150105-111120039
- NASA
- NAS 5-32626
- NASA
- NAG-6912
- Created
-
2020-03-09Created from EPrint's datestamp field
- Updated
-
2023-06-01Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Series Name
- AIP Conference Proceedings
- Series Volume or Issue Number
- 450
- Other Numbering System Name
- Space Radiation Laboratory
- Other Numbering System Identifier
- 1998-03