| Date
|
Description
|
Comments
|
| 12/09/2015 |
unwrapped |
Unwrapped as arrived at CUA. Cracks observed on the face - see Pictures 12/09/2015.
|
| 12/10/2015 |
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 |
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 |
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 |
Thermal annealing |
Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
|
| 12/17/2015 |
Long. Transmittance |
Crystal wrapped.
|
| 12/17/2015 |
Unwrapped |
Preparing for transverse transmittance.
|
| 12/17/2015 |
Transverse Transmittance |
Scan at 360, 420, and 620nm.
|
| 12/18/2015 |
Irradiation |
160 keV photons at 6mA, for 10min.
|
| 12/18/2015 |
Transverse Transmittance |
Scan at 360, 420, and 620nm after 30 min from irradiation.
|
| 01/14/2016 |
Transverse Transmittance |
Scan at 420nm (scan setup realigned).
|
| 01/14/2016 |
Irradiation |
160 keV photons at 6mA, for 20min.
|
| 01/14/2016 |
Transverse Transmittance |
Scan at 420nm after 30 min from irradiation.
|
| 01/14/2016 |
Transverse Transmittance |
Spectral measurement.
|
| 02/01/2016 |
Thermal annealing |
Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
|
| 05/16/2016 |
Transverse Transmittance |
Scan at 420nm, 360nm, 650nm.
|
| 05/16/2016 |
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 |
Transverse Transmittance |
Scan at 420nm after irradiation.
|
| 05/17/2016 |
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 |
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 |
Transverse Transmittance |
Spectral, at center (position where irradiated with Co-60). In preparation for x-ray machine.
|
| 05/24/2016 |
Irradiation (x-ray) |
90min @ 160kV @ 6mA.
|
| 05/24/2016 |
Transverse Transmittance |
At same position as before, after about 5min of irradiation in x-ray machine.
|
| 05/24/2016 |
Irradiation (x-ray) |
180min @ 160kV @ 6mA.
|
| 06/03/2016 |
Thermal annealing |
Ramp up at 18oC/hour up to 200oC. Stays for 10 hours and ramp down at 18oC/hour.
|
| 06/06/2016 |
Transverse Transmittance |
Spectral measurement with Lambda 750.
|
| 06/06/2016 |
Transverse Transmittance |
Spectral measurement with Lambda 950 - integrated sphere (may not be at exactly the same position).
|
