MainPage:Nuclear:NPS:PWO:CrystalLOG:SICCAJ27

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Time LOG

SICCA J27
Date Experimenter(s) Description Comments
03/09/2016 Salina Pictures Documentation of crystal's conditions as it arrived at CUA.
03/09/2016 Marco and Salina Dimensions Crystal's dimensions measured. Length and six points of width (3 in each face).
03/18/2016 Marco Thermal annealing Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
04/01/2016 Salina Light Yield Run 3168: crystal wrapped with ~5 layers of teflon tape and 2 layers of black tape. Steps of 20min, 1cm. T=18oC. LY = 17.95 pe/MeV.
07/06/2016 Summer Students Longitudinal Transmittance Scan Wavelengths: 200-800nm. 3 layers of teflon, 1 layer of electrical.
07/23/2016 Summer Students Light Yield ~50,000 incidents recorded at ~18 degrees Celsius.
07/29/2016 Summer Students Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/2016 Summer Students X-Ray Irradiation 160kV 6.3mA 70 minutes. 14.16 cm for LabJack on shelf 8. 6290R/min ionization rate.
07/29/2016 Summer Students Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/2016 Summer Students LED curing 7 minutes with 34 blue LEDs. 3.5 V. Millipore cover placed over lights and crystal.
07/29/2016 Summer Students Transverse Transmittance At 10cm. 200-800nm wavelength.
07/10/2017 Summer Students Light Yield Run 3693. 100ns gw. ~50,000 incidents ~3 layers of teflon tape ~1 layer of electrical. LY=12.80 pe/MeV.

Pictures at 03/09/2016

Three cracks on edge of crystal shown.

Light Yield

07/23/2016

Radiation Hardness

07/29/2016. dk=-0.0676

LED curing

07/29/2016