Particle Measurement System with MPPC and Scintillator
1. Characteristics of MPPC
- Multi-Pixel Photon Counter
- Silicon photomultiplier (SiPM) products from HAMAMATSU
- High density pixel array (~ 102 pixel/mm2)
- Single-photon avalanche photodiode (Geiger mode)
- Fast rise time (~ ns)
- Compact size ( < 1cm2 per unit) and strong to magnetic field
=> Advantages over PMT
![structure_fig2](/img/cens_en/contents/facilities_0504_img01.png)
![structure_fig2](/img/cens_en/contents/facilities_0504_img02.png)
KoBRTypical response of MPPC (SiPM) pixels
2. Purpose of the project
- Multi-Pixel Photon Counter
- Developing compact array of scintillation detectors for energy and position measurement of charged particles in various nuclear physics experiments
- Developing fast timing measurement system for energetic charged particles
- Developing new type of scintillation detector system not feasible with PMT
3. Bench test results
- Multi-Pixel Photon Counter
- CsI(Tl), GaGG:Ce scintillator crystals with HAMAMATSU S13360-6050PE MPPC
- Higher gain and energy resolution are found with higher bias.
- Quadruple MPPC setting showed energy resolution, 8.4% at 662 keV
![structure_fig2](/img/cens_en/contents/facilities_0504_img03.png)
GAGG(Ce), CsI scintillation crystals and MPPC (left) and Bench test with radiation source (right)
![structure_fig2](/img/cens_en/contents/facilities_0504_img04.png)
Gain and resolution graphs for different bias with single and quadruple MPPC
4. Future applications
- Multi-Pixel Photon Counter
- Charged particle energy detectors for active target TPC (ex. TexAT_v2, AToM-X)
- Segmented plastic scintillator array for high resolution ToF detector
![structure_fig2](/img/cens_en/contents/facilities_0504_img05.png)
TexAT assembly design. CsI + MPPC are behind the silicon detectors (red arrow)
![structure_fig2](/img/cens_en/contents/facilities_0504_img06.png)
Schematic view of SiPM-plastic scintillator based ToF detector for test