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Time LOG

SICCA J16
Date Description Comments
12/14/2015 Pictures Documentation of crystal's conditions as it arrived at CUA.
12/14/2015 Wrapped Preparing for light yield measurement. Approximately 5 layers of teflon tape, and 2 layers of black tape.
12/15/2015 LY scan Measurement of LY along crystal. More details in the LOGBOOK, runs xx..
02/01/2016 Thermal annealing Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
03/04/2016 Transverse Transmittance At the center of the crystal, every nm from 200nm until 800nm. Sample: 1317
03/04/2016 Dimensions Crystal's dimensions measured. Length and six points of width (3 in each face).
05/23/2016 Transverse Transmittance Scan Wavelengths: 360nm, 420nm, 620nm. Sampling period: 0.6s, moving motor at 2mm/s.
07/05/2016 Longitudinal Transmittance Scan Wavelengths: 200-800nm. Measured effect of iris diameter on transmittance. 8.0mm, 11.5mm, 15mm, and 17mm.
07/14/2016 Longitudinal Transmittance Scan Wavelengths: 200-800nm. Measured effect of off center crystal placement on transmittance. +1.3°C, +2.3°C, -1.3°C, -2.3°C.
07/26/2016 Light Yield Run 3250. 100ns gw. ~50,000 incidents ~3 layers of teflon tape ~1 layer of electrical.
07/29/2016 Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/16 X-Ray Irradiation 160kV, 6.3mA, 70 minutes. 6290 R/min.
07/29/2016 Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/2016 LED curing 7 minutes with 34 blue LEDs. 3.5 V. Millipore cover placed over lights and crystal.
07/29/2016 Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/2016 LED curing 7 more minutes (14 minutes total) with 34 blue LEDs. 3.5 V. Millipore cover placed over lights and crystal.
07/29/2016 Transverse Transmittance At 10cm. 200-800nm wavelength.
07/29/2016 LED curing 7 more minutes (21 minutes total) with 34 blue LEDs. 3.5 V. Millipore cover placed over lights and crystal.

Pictures at 12/14/2015

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Transmittance Uncertainty 07/2016

File:J16iris.JPG
Iris diameter vs Transmittance.
File:J16flip.JPG
"Flipping" crystal vs Transmittance.