AMS-02 Anti-Coincidence Counter
Dr. Chan Hoon Chung, Dr. Thomas Kirn
The ACC detects unwanted particle tracks running through the tracker volume outside the main acceptance mimicking anti-nuclei.
Requirements for the ACC-System:
- High detection efficiency
- operational in high field
- fast response for trigger
The ACC-System consists of 16 scintillator panels (Bicron BC414) with the dimensions 826.5mm x 230mm x 8mm. The scintillation light is transported by wave length shifting fibers (Kuraray Y-11(200)M, 1mm diameter) to an optical connector. From here clear fibers (Bicron BCF-98, 1mm diameter) are used to transport the light to the photomultiplier tube (R5946-70 Hamamatsu).
