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Time LOG

SICCA J16

Date	Experimenter	Description	Comments
12/14/2015	Marco	Pictures	Documentation of crystal's conditions as it arrived at CUA.
12/14/2015	Marco	Wrapped	Preparing for light yield measurement. Approximately 5 layers of teflon tape, and 2 layers of black tape.
12/15/2015	Marco	LY scan	Measurement of LY along crystal. More details in the LOGBOOK, runs xx..
02/01/2016	Marco	Thermal annealing	Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
03/04/2016	Marco	Transverse Transmittance	At the center of the crystal, every nm from 200nm until 800nm. Sample: 1317
03/04/2016	Marco	Dimensions	Crystal's dimensions measured. Length and six points of width (3 in each face).
05/23/2016	Marco	Transverse Transmittance Scan	Wavelengths: 360nm, 420nm, 620nm. Sampling period: 0.6s, moving motor at 2mm/s.
07/05/2016	Summer Students	Longitudinal Transmittance Scan	Wavelengths: 200-800nm. Measured effect of iris diameter on transmittance. 8.0mm, 11.5mm, 15mm, and 17mm.
07/14/2016	Summer Students	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	Summer Students	Light Yield	Run 3250. 100ns gw. ~50,000 incidents ~3 layers of teflon tape ~1 layer of electrical.
07/29/2016	Summer Students	Transverse Transmittance	At 10cm. 200-800nm wavelength.
07/29/16	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.
07/29/2016	Summer Students	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	Summer Students	Transverse Transmittance	At 10cm. 200-800nm wavelength.
07/29/2016	Summer Students	LED curing	7 more minutes (21 minutes total) with 34 blue LEDs. 3.5 V. Millipore cover placed over lights and crystal.
01/5/2017	TH	Light Yield	Already wrapped crystal, run 3532: 9.68 pe/MeV, run 3533: 9.83 pe/MeV.
07/10/2017	Summer Students	Light Yield	Run 3690. 100ns gw. ~50,000 incidents ~3 layers of teflon tape ~1 layer of electrical. LY=12.61 pe/MeV.
07/26/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
07/26/2017	Summer Students	Xray Radiation	70 minutes, 160mV, 6mA. ___ mm from beam origin.
07/26/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
07/26/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 7 minutes.
07/26/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
07/26/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 14 minutes.
07/26/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
07/26/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 21 minutes.
07/26/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.

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

07/26/2016

Radiation Hardness

07/29/2016

LED curing

07/29/2016