Calibration of TEPC for CubeSat Experiment to Measure Space Radiation
A newly designed Tissue Equivalent Proportional Counter (TEPC) has been developed for the CubeSat mission, SIGMA (Scientific cubesat with Instruments for Global Magnetic field and rAdiation) to investigate space radiation. In order to test the performance of the TEPC, we have performed heavy ion b...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2015-06-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2015/v32n2/OJOOBS_2015_v32n2_145.pdf |
| Summary: | A newly designed Tissue Equivalent Proportional Counter (TEPC) has been developed for the CubeSat mission, SIGMA
(Scientific cubesat with Instruments for Global Magnetic field and rAdiation) to investigate space radiation. In order to test
the performance of the TEPC, we have performed heavy ion beam experiments with the Heavy Ion Medical Accelerator
in Chiba (HIMAC), Japan. In space, human cells can be exposed to complex radiation sources, such as X-ray, Gamma ray,
energetic electrons, protons, neutrons and heavy charged particles in a huge range of energies. These generate much a
larger range of Linear Energy Transfer (LET) than on the ground and cause unexpected effects on human cells. In order to
measure a large range of LET, from 0.3 to 1,000 keV/μm, we developed a compact TEPC which measures ionized particles
produced by collisions between radiation sources and tissue equivalent materials in the detector. By measuring LET
spectra, we can easily derive the equivalent dose from the complicated space radiation field. In this HIMAC experiment, we
successfully obtained the linearity response for the TEPC with Fe 500 MeV/u and C 290 MeV/u beams and demonstrated
the performance of the active radiation detector. |
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| ISSN: | 2093-5587 2093-1409 |