Difference between revisions of "03-19-2015"

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=Analog Timing signals=
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==Scope picture==
 
[[File:03_19_2015_BLUB.jpg | 500 px]]
 
[[File:03_19_2015_BLUB.jpg | 500 px]]
  
Raw TDC spectrum corresponding to the above scope picture:
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==Raw TDC spectrum corresponding to the above scope picture:==
  
 
[[File:run8752_nocalibr.jpg | 500 px]]
 
[[File:run8752_nocalibr.jpg | 500 px]]
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Peak current 30 mA
 
Peak current 30 mA
  
QDC channel # 25 corresponds to BLUT (channel # 10 on the splitter).  
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  QDC channel # 25 corresponds to BLUT (channel # 10 on the splitter).  
  
QDC channels [22,26] have cross talk issues.
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QDC channels [22,26] have cross talk issues.
  
 
QDC channel # 17 corresponds to Faraday Cup (channel #2 on the splitter).
 
QDC channel # 17 corresponds to Faraday Cup (channel #2 on the splitter).
  
'''run# 8753''': Production run with D2O target in:
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='''run# 8753''': Production run with D2O target in:=
  
 
Puls width 2 ns
 
Puls width 2 ns
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Ee = 10.5 MeV
 
Ee = 10.5 MeV
  
Current: during the run pek current was changed from 30 mA to 400 mA.
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Current: during the run the value of peak current was changed from 30 mA to 400 mA.
  
 
TOF spectra obtained during the run with the detector BLUB:
 
TOF spectra obtained during the run with the detector BLUB:
  
[[File:TDC_16.png | 500 px]]
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[[File:TDC_17.png | 500 px]]
  
[[File:TDC_17.png | 500 px]]
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[[File:TDC_16_2.png | 500 px]]
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TDC[17] = BLUB detector saw 81160 beam pulses for the above spectrum.  29640 of those pulses produced hits in the TDC.  The remaining beam pulses did not result in a signal in the detector.
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218 Neutron candidates were present in the 29640 pulses ( 218/81160 = 1n /372 pulses).  2746 photons were found out of the 29640 pulses (29422 / 81160 = 1 gamma / 3 pulses).
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='''QDC spectra from Faraday Cup''':=
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''Peak Current 500 mA, run 8754''
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[[File:QDC17_spectrum_8754.png | 500 px]]
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QDC has a peak at 1116 channel.
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''Peak Current 300 mA, run 8755''
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[[File:QDC17_spectrum_8755.png | 500 px]]
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QDC has a peak at 685 channel.
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''Peak Current 30 mA, run 8756''
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[[File:QDC17_spectrum_8756.png | 500 px]]
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QDC has a peak at 112 channel.
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''Peak Current 100 mA, run 8757''
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[[File:QDC17_spectrum_8757.png | 500 px]]
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QDC has a peak at 289 channel.

Latest revision as of 20:36, 26 February 2016

Analog Timing signals

Scope picture

03 19 2015 BLUB.jpg

Raw TDC spectrum corresponding to the above scope picture:

Run8752 nocalibr.jpg

Applying the calibration:

Run8752 calibr.jpg

Run8752 calibr fit.jpg

Accelerator parameters:

Pulse width 2 ns

Ee = 10.5 MeV

Peak current 30 mA

 QDC channel # 25 corresponds to BLUT (channel # 10 on the splitter). 

QDC channels [22,26] have cross talk issues.

QDC channel # 17 corresponds to Faraday Cup (channel #2 on the splitter).

run# 8753: Production run with D2O target in:

Puls width 2 ns

Ee = 10.5 MeV

Current: during the run the value of peak current was changed from 30 mA to 400 mA.

TOF spectra obtained during the run with the detector BLUB:

TDC 17.png

TDC 16 2.png


TDC[17] = BLUB detector saw 81160 beam pulses for the above spectrum. 29640 of those pulses produced hits in the TDC. The remaining beam pulses did not result in a signal in the detector. 218 Neutron candidates were present in the 29640 pulses ( 218/81160 = 1n /372 pulses). 2746 photons were found out of the 29640 pulses (29422 / 81160 = 1 gamma / 3 pulses).

QDC spectra from Faraday Cup:

Peak Current 500 mA, run 8754

QDC17 spectrum 8754.png

QDC has a peak at 1116 channel.

Peak Current 300 mA, run 8755

QDC17 spectrum 8755.png

QDC has a peak at 685 channel.

Peak Current 30 mA, run 8756

QDC17 spectrum 8756.png

QDC has a peak at 112 channel.

Peak Current 100 mA, run 8757

QDC17 spectrum 8757.png

QDC has a peak at 289 channel.