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Initial Tests

A series of tests were performed using the Faxitron CP160 instrument, a X-ray Irradiation system, to determine if the BTCP ## crystal and PbF2 crystal can irradiate. Measuring the transmittance of these crystals, before and after the irradiation, can help us understand the behavior of these crystals in high radiation environments.

There were a total of four runs these initial tests included involving the BTCP ## and PbF2 cube.

The following table shows the parameters set on the X-ray Irradiation system for each run with setting of 160 V (max).

	I (mA)	Exposure (krad/hr)	Time (min)	Crystals Tested
First Run	4	~30	10	BTCP ##
Second Run	5	35	10	BTCP ##
Third Run	6	~40	10	BTCP
Fourth Run	6	~40	10	BTCP ## and PbF2 cube
Fifth Run	6	~40	10	BTCP ## and PbF2 cube (on top)

Pictures:

Perkin Elmer spectrometer Lambda 750 UV/VIS/NIR used for all the measurements.

PbF2 crystal at center of the spectrometer sample compartment.

Results

Perkin Elmer spectrometer Lambda 750 UV/VIS/NIR used for all the measurements.

PbF2 crystal at center of the spectrometer sample compartment.

We were able to see visual evidence of irradiation on the PbF2 crystal.

Benchmark Tests

Pictures: