Difference between revisions of "TDC Calibration"

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[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]
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We used:
 
We used:
  
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-delay amplifier TENNELEC TC215 to calibrate TDCs in the region > 250 ns;
 
-delay amplifier TENNELEC TC215 to calibrate TDCs in the region > 250 ns;
  
Range of all three TDCs was set to 50nsx100.  
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Range of all three TDCs was set to '''50nsx100 (upper plot)''' and '''200nsx10 (lower plot)'''.  
  
 
ADC-TAC pair was chosen in such a way that we used during the experiment.
 
ADC-TAC pair was chosen in such a way that we used during the experiment.
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[[Image:567_02.jpg |500px]]
 
[[Image:567_02.jpg |500px]]
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[[Image:567_02_2000.jpg |500px]]
  
 
=ORTEC TAC 567-01 and ADC 1A=
 
=ORTEC TAC 567-01 and ADC 1A=
  
 
[[Image:567_01.jpg |500px]]
 
[[Image:567_01.jpg |500px]]
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[[Image:567_01_2000.jpg |500px]]
  
 
=ORTEC TAC 566-01 and  ADC 1C=
 
=ORTEC TAC 566-01 and  ADC 1C=
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[[Image:566_01.jpg |500px]]
 
[[Image:566_01.jpg |500px]]
  
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[[Image:566_01_2000.jpg |500px]]
  
 
= Comparison of old and new calibration coefficients =
 
= Comparison of old and new calibration coefficients =
  
[[Image:Old_calibration.jpg | 300px ]]
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We used ADC 1D for the run pf_10_10_08_00040
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[[Image:Old_calibration.jpg |500 px]]
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The width of photon peak is about '''10.3 ns''' for old calibration.
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[[Image:New_calibration.jpg |500 px]]
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The width of photon peak is about '''32.3 ns''' for new calibration.
  
[[Image:New_calibration.jpg | 300px ]]
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[http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back]

Latest revision as of 06:18, 5 February 2009

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We used:

-detector A to calibrate all the TDCs;

-LeCroy octal discriminator to produce standard negative pulses;

-passive delay line to calibrate TDCs in the region < 100 ns;

-delay amplifier TENNELEC TC215 to calibrate TDCs in the region > 250 ns;

Range of all three TDCs was set to 50nsx100 (upper plot) and 200nsx10 (lower plot).

ADC-TAC pair was chosen in such a way that we used during the experiment.

ORTEC TAC 567-02 and ADC 1D

567 02.jpg

567 02 2000.jpg

ORTEC TAC 567-01 and ADC 1A

567 01.jpg

567 01 2000.jpg

ORTEC TAC 566-01 and ADC 1C

566 01.jpg

566 01 2000.jpg

Comparison of old and new calibration coefficients

We used ADC 1D for the run pf_10_10_08_00040

Old calibration.jpg

The width of photon peak is about 10.3 ns for old calibration.

New calibration.jpg

The width of photon peak is about 32.3 ns for new calibration.

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