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. | + | 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]] | ||
| + | [[Image:566_01_2000.jpg |500px]] | ||
= Comparison of old and new calibration coefficients = | = Comparison of old and new calibration coefficients = | ||
| − | [[Image:Old_calibration.jpg | | + | 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. | ||
| − | [ | + | [http://wiki.iac.isu.edu/index.php/PhotoFission_with_Polarized_Photons_from_HRRL Go Back] |
Latest revision as of 06:18, 5 February 2009
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
ORTEC TAC 567-01 and ADC 1A
ORTEC TAC 566-01 and ADC 1C
Comparison of old and new calibration coefficients
We used ADC 1D for the run pf_10_10_08_00040
The width of photon peak is about 10.3 ns for old calibration.
The width of photon peak is about 32.3 ns for new calibration.