PbF2 CrystalNumber39

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Below are the resulting transparency measurements for PbF2 block # 39

12/4/07

Accelerator Settings
beam energy 20 MeV
Rep Rate: 30 Hz
I_peak: 60 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)
beam start: 8:30
beam stop: 10:30
Pick-up Coil Pulse Recording (PbF2 crystal at z=30cm away)

O-scope pulses were recorded on the pick-up coil with dimensions in inches and the intensity measured in Volt [math]\times[/math] ns

@8:53 Pulseblock39853.JPG

@9:04 Pulseblock39904.JPG

@9:17 Pulseblock39917.JPG

@9:29 Pulseblock39929.JPG

@9:45 Pulseblock39945.JPG

@9:55 Pulseblock39955.JPG

@10:16 Pulseblock391016.JPG

Before: DSCF1548.JPG After: DSCF1550.JPG

Dose rate measurements (@1039 hours)
[math]\gamma[/math]-radiation 7.5 mR/hr
[math]\beta[/math]-radiation: 15 mR/hr


Transparency Measurements (@1400 hours)

Block39.JPG Block3990deg.JPG

Transparency Measurements (@1515 hours)

Block39@90deg2hourslater.JPG Block392hourslater.JPG

12/5/07

Under blue light for 19 hours before next transparency measurement.


Transparency Measurement (1030 hours)


Accelerator Settings
beam energy 20 MeV
Rep Rate: 30 Hz
I_peak: 60 mA/pulse
pulse width: 0.1 [math]\mu[/math]s (100 ns)
beam start: 10:45
beam stop: 12:45
Pick-up Coil Pulse Recording (PbF2 crystal at z=30cm away)

O-scope pulses were recorded on the pick-up coil with dimensions in inches and the intensity measured in Volt [math]\times[/math] ns


@11:00 Pulseb391100.JPG

@11:10 Pulseb391110.JPG

@11:20 Pulseb391120.JPG

@11:30 Pulseb391130.JPG

@11:40 Pulseb391140.JPG

@11:50 Pulseb391150.JPG

@12:00 Pulseb391200.JPG

@12:10 Pulseb391210.JPG

@12:20 Pulseb391220.JPG

@12:30 Pulseb391230.JPG

@12:40 Pulseb391240.JPG

Dose rate measurements (@ 1247 hours)
[math]\gamma[/math]-radiation 4.5 mR/hr
[math]\beta[/math]-radiation: 12 mR/hr



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