05-3-2017
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] |
run list
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.
Cuts used in histograms: neutrons: 40 to 140 ns ; photons: -20 to 30 ns ; noise: 200 to 500ns
| 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 |
|---|---|---|---|---|---|---|---|---|---|
| 6286 | Integral=12.5 pV*s 260 mV peak = 1.4A | Empty | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz | singles: 7.22E-04 doubles: 0.00E+00 | singles: +- 6% doubles: +-inf% | singles/A: 5.16E-04 doubles/A: 0.00E+00 | |||
| 6287 | Integral=12.5 pV*s | 9 mm x 2cm x 4cm thick Al (1/10 R_0) | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz |  |
singles: 8.72E-04 doubles: 0.00E+00 | singles: +- 8% doubles: +-inf% | singles/A: 6.23E-04 doubles/A: 0.00E+00 | ||
| 6288 | Integral=12.5 pV*s | 0.5 mm x 4 cm x 2 cm DU-238 R45020 | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , |  |
singles: 4.02E-03 doubles: 1.82E-05 | singles: +- 2% doubles: +-40% | singles/A: 2.87E-03 doubles/A: 1.30E-05 | doubles/single: 4.539E-03 | |
| Coincidence analysis while using data from the first 40 minutes of run 6283 from yesterday, combined with the data from run 6288 ( yesterday's runlist) ====>> | singles: 4.68E-03 doubles: 2.10E-05 | singles: +- 1% doubles: +-24% | singles/A: 3.34E-03 doubles/A: 1.50E-05 | doubles/single: 4.49E-03 | |||||
| 6290 | Integral=12.5 pV*s | 0.5mm x 2cm x 4cm Th #170113000 | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , |  |
singles: 1.76E-03 doubles: 6.64E-06 | singles: +- 4% doubles: +-70% | singles/A: 1.26E-03 doubles/A: 4.75E-06 | doubles/single: 3.77E-03 | |
| 6291 | Integral= 11.5 pV*s | HEU Tag #HMF-SNM-ER-2L | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 1.4 A Peak , 180.4 Hz , |  |
singles: 2.26E-03 doubles: 4.61E-06 | singles: +- 2% doubles: +-57% | singles/A: 1.61E-03 doubles/A: 3.30E-06 | doubles/single: 2.04E-03 | |
| 6292 | Integral= 7.5 pV*s | 0.5 mm x 4 cm x 2 cm DU-238 R45020 | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 0.9 A Peak , 180.4 Hz |  |
singles: 2.63E-03 doubles: 1.52E-05 | singles: +- 1% doubles: +-20% | singles/A: 2.92E-03 doubles/A: 1.69E-05 | doubles/single: 5.769E-03 | |
| 6293 | Integral= 4.5 pV*s | 0.5 mm x 4 cm x 2 cm DU-238 R45020 | 10.6 MeV (1123 Gauss) , 3 ns FWHM pulse width , 0.7 A Peak , 180.4 Hz | singles: 1.76E-03 doubles: 6.27E-06 | singles: +- 2% doubles: +-37% | singles/A: 2.51E-03 doubles/A: 8.96E-06 | doubles/single: 3.568E-03
| ||
beam profile
circle=2cm ; inner ring = 5cm ; outter ring = 10 cm
