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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

Iris diameter vs Transmittance.

Ideal crystal placement would be 20cm side parallel to light beam. Reasonable placement errors would be 1.3° and 2.3° off of this. At these angles the beam still appeared to fall within the crystla face under the "Align" function

Light Yield

Iris diameter vs Transmittance.

Radiation Hardness

Iris diameter vs Transmittance.

LED curing

Iris diameter vs Transmittance.

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