MainPage:Nuclear:NPS:PWO:CrystalLOG:SICCA02

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Time LOG

SICCA 02
Date Experimenter(s) Description Comments
12/09/2015 Marco unwrapped Unwrapped as arrived at CUA. Cracks observed on the face - see Pictures 12/09/2015.
12/10/2015 Marco Thermal annealing Starting 10:30AM. Ramp up at 18oC/hour until 200oC, stay at 200oC for 10 hours, ramp down at -18oC/hour.
12/11/2015 Marco Wrapped Preparing for light yield measurement. Approximately 5 layers of teflon tape, and 2 layers of black tape - see Pictures 12/11/2015.
12/14/2015 Marco LY scan Measurement of LY along crystal. Cracked area far apart from PMT; cracked face opposite to the radioactive side. More details in the LOGBOOK, runs 2942..
12/xx/2015 Marco Thermal annealing Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
12/17/2015 Marco Long. Transmittance Crystal wrapped.
12/17/2015 Marco Unwrapped Preparing for transverse transmittance.
12/17/2015 Marco Transverse Transmittance Scan at 360, 420, and 620nm.
12/18/2015 Marco Irradiation 160 keV photons at 6mA, for 10min.
12/18/2015 Marco Transverse Transmittance Scan at 360, 420, and 620nm after 30 min from irradiation.
01/14/2016 Marco Transverse Transmittance Scan at 420nm (scan setup realigned).
01/14/2016 Marco Irradiation 160 keV photons at 6mA, for 20min.
01/14/2016 Marco Transverse Transmittance Scan at 420nm after 30 min from irradiation.
01/14/2016 Marco Transverse Transmittance Spectral measurement.
02/01/2016 Marco Thermal annealing Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
05/16/2016 Salina Transverse Transmittance Scan at 420nm, 360nm, 650nm.
05/16/2016 Marco Irradiation 700 mGy of Co-60 at dose rates of ~70 mGy/h (10 h) - source at 3cm from crystal. Cylinder of 1 inch per 2cm irradiated.
05/17/2016 Salina Transverse Transmittance Scan at 420nm after irradiation.
05/17/2016 Marco Irradiation 840 mGy of Co-60 at dose rates of ~70 mGy/h (12 h). Cylinder of 1 inch per 2cm irradiated.
05/18/2016 Marco Irradiation 11200 mGy (total 12Gy with previous irrad) of Co-60 at dose rates of ~105 mGy/h (xx h) - source at 1cm from crystal. Cylinder of 1 inch per 2cm irradiated.
05/24/2016 Marco Transverse Transmittance Spectral, at center (position where irradiated with Co-60). In preparation for x-ray machine.
05/24/2016 Marco Irradiation (x-ray) 90min @ 160kV @ 6mA.
05/24/2016 Marco Transverse Transmittance At same position as before, after about 5min of irradiation in x-ray machine.
05/24/2016 Marco Irradiation (x-ray) 180min @ 160kV @ 6mA.
06/03/2016 Marco Thermal annealing Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
06/06/2016 Marco Transverse Transmittance Spectral measurement with Lambda 750.
06/06/2016 Marco Transverse Transmittance Spectral measurement with Lambda 950 - integrated sphere (may not be at exactly the same position).
06/06/2016 Marco Crystal wrapped 5 layers of teflon tape and 2 layers of black electrical tape.
06/06/2016 Marco Longitudinal Transmittance Spectral measurement with Lambda 950 - integrated sphere.

Transmittance measurements

Longitudinal transmittance measured at Lambda 750 (no integrating sphere).

Pictures at 12/09/2015

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Pictures at 12/11/2015

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