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Time LOG

SICCA J29

Date	Experimenter(s)	Description	Comments
03/09/2016	Salina	Pictures	Documentation of crystal's conditions as it arrived at CUA.
03/09/2016	Salina and Marco	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.
04/07/2016	Salina	Light Yield	Run 3170: crystal wrapped with ~5 layers of teflon tape and 2 layers of black tape. Steps of 20min, 1cm. T=18oC. LY = 17.18 pe/MeV.
05/17/2016	Salina	Transverse Transmittance	At the center of the crystal, every nm from 200nm until 800nm. Sample: 1342
05/20/2016	Marco	Transverse Transmittance Scan	Wavelengths: 360nm, 420nm, 620nm. Sampling period: 0.6s, moving motor at 2mm/s.
07/06/2016	Summer Students	Longitudinal Transmittance Scan	Wavelengths: 200-800 nm. Sampling period: 0.6s, moving motor at 2mm/s.
07/23/2016	Summer Students	Light Yield	Run:3238 ~3layers of teflon tape and 1 layer of black tape. ~50,000 incidents recorded at ~18 degrees Celsius.
07/29/2016	Summer Students	Transverse Transmittance	At 10cm. 200-800nm wavelength.
08/01/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
08/01/2017	Summer Students	Xray Radiation	70 minutes, 160mV, 6mA. ___ mm from beam origin. Wait time to transmittance measurement ~2 minutes... not constant.
08/01/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
08/01/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 7 minutes.
08/01/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
08/01/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 7 more minutes (14 total).
08/01/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.
08/01/2017	Summer Students	LED curing	34 LEDs, 3.5 V for 7 more minutes (21 total).
08/01/2017	Summer Students	Transverse Transmittance Scan	Wavelengths: 200-800 nm. 10cm down.

Pictures at 03/09/2016

Stain shown on surface of crystal.

Three stains shown on the end of crystal.

Light Yield

07/23/2016