ALPIDE에서 클러스터 크기 연구

목적

클러스터 크기 분포로부터 입사 입자의 종류와 입사 에너지를 확인한다.

이론

베테-블로흐 공식

Define terminology

• MAPS structure
• Energy distribution
• Simulation results
• Garfield simulatin

Experimental set-up

• Sources
  • Am-241
  • Sr-90
• Set-up 1. Mosaic board
  • Basic set-up
  • Source
  • Vacuum
• Set-up 2. DAQ board
  • Basic set-up
  • Source
  • 2 ALPIDE
• Set-up 3. Final Mosaic set-up
  • Basic set-up

Minor Methods

Chip Information

• Old ALPIDE: A4W975R7
• Bronze ALPIDE: T854192 25T 02/4C (Used after 11.23)
• Sirver ALPIDE: T968874W16T-B2 (Used->Broken(09.23))

Threshold distribution of each chips

Analysis procedure

• Excluding hot pixels by pedestal measurement
• Clustering methode
• Correlation of 2 ALPIDE
• Uncertainty

Results

• Am-241 Hitmap and Clustermap by Isaac
• Am-241 Hitmap and Clustermap in air
• Am-241 Hitmap and Clustermap in vacuum
• Small solid angle
• Sr-90 Hitmap and Clustermap in air
• Sr-90 in APTS
• Am-241 in APTS
• Cluster Shape

Analysis

• Cluster Spacification
• air vs. vacuum
• Cluster size

Links

Geant4 simulation(https://github.com/keistad-root/AVS.git)

Analysis Tools(https://github.com/keistad-root/alpex.git)

Expected pixel generator(https://github.com/keistad-root/quid.git)

Above url link are closed. The anschluss code is ATOM(https://github.com/keistad-root/ATOM).