Transcript Geometry of WLS bar + Fiber

Geometry of WLS bar + Fiber
EJ-280 WLS Plastics( ELJEN technology)
( Similar to BC-482 from St. Gobain)
Coupled to SiPM
Emission spectrum was implemented. 1
Optical Fiber (from Kuraray)
2
Simulation result
1. Geometry( Bar+Fiber+SipM)
implemented.
2. ‘Wavelength shift’ process was on.
But it didn’t seem working.
( expected the emission spectra of
WLS)
3. Need investigations.
(nm)
Photon wavelength spectrum at SiPM
3
Position by Time difference
Continuous X-tal.
TOP : Anger Logic
(Energy weighted Position)
Bottom:
Using time difference.
Pick-up the max. E TL.
(T1-T2)*(1.0mm/0.01ps)/2
mm
4
Pixelated X-tal
Beam X = 0.5mm
Beam X = 4.0mm
mm
TOP
: Anger logic
Bottom : Time difference
mm
5
0mm
4.25mm
Plan
1. Abstracts for IEEE
pixelated X-tal configuration.
continuous X-tal configuration.
6