Difference between revisions of "05-2-2017"

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[[2nCor 44| go_back]]
 
[[2nCor 44| go_back]]
  
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'''The He-3 detector output from the spec amp to the ADC had the wrong polarity'''
  
 
''' Electronics map for the two auxiliary scintillators  '''
 
''' Electronics map for the two auxiliary scintillators  '''
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=run list=
 
 
He-3 timing is in patch panel 223A16, & energy is 223A17.
 
He-3 timing is in patch panel 223A16, & energy is 223A17.
  
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Small aux. scintillators have a CFD threshold of 0.550 V for run 6274 and later.  
 
Small aux. scintillators have a CFD threshold of 0.550 V for run 6274 and later.  
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 +
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=run list=
 +
  
 
{| border="1"
 
{| border="1"
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! Run # !!Charge/pulse !!Target!! Configuration !! Individual histos + rates !!  overlayed histos !!  All PMT's no coinc.
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! Run # !!Charge/pulse !!Target!! Configuration !! Individual histos + rates !!  overlayed histos !!  neutron coincidences per pulse  !! n-coin error !! neutron coincidences per pulse per Amp !! doubles/singles
 
|-
 
|-
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| 6272|| 18 pV*s || D2O'''|| 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , ||  ||   
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| 6272|| 18 pV*s || D2O'''|| 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , ||  ||  || singles: 3.63E-03 doubles: 6.69E-06 || singles: +- 4% doubles: +-100% || singles/A: 2.59E-03 doubles/A: 4.78E-06 || doubles/single: 1.85E-03
 
|-
 
|-
 
| 6273|| 21 pV*s || ''' 0.5mm x 2cm x 4cm  Th #170113000''' || 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, teed off Beam current monitor changing pulse size from 21 pV*s to 14 pV*s , inserted beam current into PADC ch 6 20 minutes into run||  ||  ||  
 
| 6273|| 21 pV*s || ''' 0.5mm x 2cm x 4cm  Th #170113000''' || 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, teed off Beam current monitor changing pulse size from 21 pV*s to 14 pV*s , inserted beam current into PADC ch 6 20 minutes into run||  ||  ||  
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| 6279||12 pV*s || 1" diam DU 111108007 ||  '''9.0 MeV''' , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6276-R6279Overlay.png|200px]] ||  
 
| 6279||12 pV*s || 1" diam DU 111108007 ||  '''9.0 MeV''' , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6276-R6279Overlay.png|200px]] ||  
 
|-
 
|-
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| 6280||11.5 pV*s || 1" diam DU 111108007 ||  '''10.6 MeV''' , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6279-R6280Overlay.png|200px]] || singles: 5.13E-02 doubles: 1.37E-03 || singles: +- 1% doubles: +-6% || singles/A: 3.67E-02 doubles/A: 9.78E-04 || doubles/single: 2.67E-02
+
| 6280||11.5 pV*s || 1" diam DU 111108007 ||  '''10.6 MeV''' , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6279-R6280Overlay.png|200px]] ||singles: 3.96E-02 doubles: 7.49E-04 || singles: +- 1% doubles: +-8% || singles/A: 2.83E-02 doubles/A: 5.35E-04 || doubles/single: 1.89E-02
 
|-
 
|-
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| 6282||11.5 pV*s || '''0.5 mm x 4 cm x 2 cm DU-238 R45020''' ||  10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6280-R6282Overlay.png|200px]] ||  
+
| 6282||11.5 pV*s || '''0.5 mm x 4 cm x 2 cm DU-238 R45020''' ||  10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet ||  ||  [[File:R6280-R6282Overlay.png|200px]] || singles: 4.87E-03 doubles: 2.47E-05 || singles: +- 1% doubles: +-24% || singles/A: 3.48E-03 doubles/A: 1.77E-05 || doubles/single: 5.07E-03
 
|-
 
|-
 
| 6283||11.5 pV*s || 0.5 mm x 4 cm x 2 cm DU-238 R45020 || '''HV tripped around pulse 498,000''' ; 10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , '''Removed small Scint at .725 m Kept Scint in at 1.45 m''',  ||  || Histograms only includes pulses with HV on.  [[File:R6283.png|200px]] ||  
 
| 6283||11.5 pV*s || 0.5 mm x 4 cm x 2 cm DU-238 R45020 || '''HV tripped around pulse 498,000''' ; 10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , '''Removed small Scint at .725 m Kept Scint in at 1.45 m''',  ||  || Histograms only includes pulses with HV on.  [[File:R6283.png|200px]] ||  
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=Analysis=
  
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[[Analysis_of_may_2017_runs]]
  
  

Latest revision as of 00:12, 16 June 2017

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The He-3 detector output from the spec amp to the ADC had the wrong polarity

Electronics map for the two auxiliary scintillators

Phi Angle (Degrees) PMT distance Signal cable label HV cable label HV channel on Lecroy Mainframe CFD CH VNIM-ECL channel ROOT variable
~282 m 102B1.2 shv1.2 5:L1.2 1 (left) B-0 evt.TDC[1][25]
~282 m 282T1.7 shv1.7 5:L1.7 2 (left) B-1 evt.TDC[1][26]

He-3 timing is in patch panel 223A16, & energy is 223A17.

High voltage & discriminator settings:

30T: 1450;30 , 30B:1450;30 , 54T: 1500;30 , 54B: 1500;30 , 78T:1500;30 , 78B: 1525;30 , 126T: 1500;30 , 126B: 1500;30 , 150T: 1500;40 , 150B: 1500;40 , 210T: 1500;40 , 210B: 1500;40 , 234T: 1500;30 , 234B: 1500;30 , 258T: 1350;30, 258B: 1450;30 , 306T: 1400;30 , 306B: 1400;30 , 330T: 1450;30 , 330B: 1500;30

Radiator 1.5" Al.

Slits currently at 500 => 19 mm, at 75 =0, at 1000=38 mm, readback number is linear with slit width.

Small aux. scintillators have a CFD threshold of 0.550 V for run 6274 and later.


run list

Run # Charge/pulse Target Configuration Individual histos + rates overlayed histos neutron coincidences per pulse n-coin error neutron coincidences per pulse per Amp doubles/singles
6272 18 pV*s D2O 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , singles: 3.63E-03 doubles: 6.69E-06 singles: +- 4% doubles: +-100% singles/A: 2.59E-03 doubles/A: 4.78E-06 doubles/single: 1.85E-03
6273 21 pV*s 0.5mm x 2cm x 4cm Th #170113000 7.5 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, teed off Beam current monitor changing pulse size from 21 pV*s to 14 pV*s , inserted beam current into PADC ch 6 20 minutes into run
6274 12 pV*s 0.5mm x 2cm x 4cm Th #170113000 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, R6273-R6274Overlay.png
6275 10 pV*s Al 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, R6274-R6275Overlay.png
6276 10 pV*s Al 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet R6275-R6276Overlay.png
6278 10 pV*s 1" diam DU 111108007 7.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet R6275-R6276Overlay.png
6279 12 pV*s 1" diam DU 111108007 9.0 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet R6276-R6279Overlay.png
6280 11.5 pV*s 1" diam DU 111108007 10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet R6279-R6280Overlay.png singles: 3.96E-02 doubles: 7.49E-04 singles: +- 1% doubles: +-8% singles/A: 2.83E-02 doubles/A: 5.35E-04 doubles/single: 1.89E-02
6282 11.5 pV*s 0.5 mm x 4 cm x 2 cm DU-238 R45020 10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , small Scint at .725 m and 1.45 m, added 2" lead on beam right side of magnet R6280-R6282Overlay.png singles: 4.87E-03 doubles: 2.47E-05 singles: +- 1% doubles: +-24% singles/A: 3.48E-03 doubles/A: 1.77E-05 doubles/single: 5.07E-03
6283 11.5 pV*s 0.5 mm x 4 cm x 2 cm DU-238 R45020 HV tripped around pulse 498,000 ; 10.6 MeV , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , Removed small Scint at .725 m Kept Scint in at 1.45 m, Histograms only includes pulses with HV on. R6283.png
6284 11. pV*s 9 mm x 2cm x 4cm thick Al (1/10 R_0) HV off for entire run.
6285 11. pV*s 9 mm x 2cm x 4cm thick Al (1/10 R_0) 10.6 MeV , 3 ns FWHM pulse width , 1.3 A Peak , 180.4 Hz , Removed small Scint at .725 m Kept Scint in at 1.45 m,


Analysis

Analysis_of_may_2017_runs




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