Measurement Principle
The Solar Particle Monitor (SPM) onboard MMO is a particle detector which is part of the housekeeping sensors of MMO. It consists of two silicon photo diodes (SPM1 and SPM2) with effective area of 10 mm x 10 mm and depletion layer thickness of 0.3 mm. Each sensor have four different deposited energy channels. The silicon sensors are covered by a magnesium chassis and the SPM is located inside the MMO spacecraft. Radiation incident on the SPM has already passed through the satellite structure, the SPM chassis, and the chassis of other instruments, so the energy of the radiation coming from outer space is not measured as it is. The SPM calibration is currently being performed with Geant4 simulation.
Members
- Principal Investigator
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Go Murakami (JAXA, Japan)
Haruka Ueno (JAXA, Japan)
Takeshi Takashima (JAXA, Japan)
Shoya Matsuda (Kanazawa University, Japan)