Difference between revisions of "03-30-2015"

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Line 20: Line 20:
 
N(gamma/pulse, TDC[1][10]) = 1/9, N(n/pulse, TDC[1][10]) = 1/245 = 0.0041
 
N(gamma/pulse, TDC[1][10]) = 1/9, N(n/pulse, TDC[1][10]) = 1/245 = 0.0041
 
|-
 
|-
−
|4507  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). Pair spectrometer Det @ 15 mV threshold. Production run.
+
|4507  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler = 120 e+/min
  
 
N(gamma/pulse, TDC[1][8], Det #1 top) = 1/15, N(n/pulse, TDC[1][8], Det #1 top) = 0.0023  
 
N(gamma/pulse, TDC[1][8], Det #1 top) = 1/15, N(n/pulse, TDC[1][8], Det #1 top) = 0.0023  
Line 26: Line 28:
 
N(gamma/pulse, TDC[1][10], Det #3 top) = 1/11
 
N(gamma/pulse, TDC[1][10], Det #3 top) = 1/11
  
−
N(n/pulse, TDC[1][3], Det #4 top) = 0.0037
+
N(n/pulse, TDC[1][3], Det #4 bottom) = 0.0037
  
 
N(n/pulse, TDC[1][9], Det #1 bottom) = 0.0021
 
N(n/pulse, TDC[1][9], Det #1 bottom) = 0.0021
Line 38: Line 40:
 
N(n/pulse, TDC[1][14], Det #6 upstream) = 0.0012
 
N(n/pulse, TDC[1][14], Det #6 upstream) = 0.0012
 
|-
 
|-
−
|4508  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). Pair spectrometer Det @ 15 mV threshold. Production run.
+
|4508  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler = 125, 133, 147, 119, 110, 125 e+/min
 +
 
 +
N(gamma/pulse, TDC[1][0], Det #2 top) = 1/4, N(n/pulse, TDC[1][0], Det #2 top) = 0.0025
 +
 
 +
N(gamma/pulse, TDC[1][1], Det #2 bottom) = 1/4, N(n/pulse, TDC[1][1], Det #2 bottom) = 0.0015
 +
 
 +
N(gamma/pulse, TDC[1][8], Det #1 top) = 1/15, N(n/pulse, TDC[1][8], Det #1 top) =  0.0023
 +
 
 +
N(gamma/pulse, TDC[1][10], Det #3 top) = 1/11
 +
 
 +
N(n/pulse, TDC[1][3], Det #4 bottom) = 0.0043,  N(n/pulse, TDC[1][2], Det #4 top) = 0.004
 +
 
 +
N(n/pulse, TDC[1][9], Det #1 bottom) = 0.0024
 +
 
 +
N(n/pulse, TDC[1][0], Det #2 top) = 0.0024
 +
 
 +
N(n/pulse, TDC[1][10], Det #3 top) = 0.0024
 +
 
 +
N(n/pulse, TDC[1][4], Det #5 upstream) = 0.0005
 +
 
 +
N(n/pulse, TDC[1][14], Det #6 upstream) = 0.0013
 +
|-
 +
|4509  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler =  e+/min
 +
 
 +
N(gamma/pulse, TDC[1][0], Det #2 top) = 1/3.8, N(n/pulse, TDC[1][0], Det #2 top) = 0.0022
 +
 
 +
N(gamma/pulse, TDC[1][1], Det #2 bottom) = 1/4.2, N(n/pulse, TDC[1][1], Det #2 bottom) = 0.0014
 +
 
 +
N(gamma/pulse, TDC[1][8], Det #1 top) = 1/14.7, N(n/pulse, TDC[1][8], Det #1 top) = 0.0022
 +
 
 +
N(gamma/pulse, TDC[1][10], Det #3 top) = 1/10.4
 +
 
 +
N(n/pulse, TDC[1][3], Det #4 bottom) = ,  N(n/pulse, TDC[1][2], Det #4 top) =
 +
 
 +
N(n/pulse, TDC[1][9], Det #1 bottom) =
 +
 
 +
N(n/pulse, TDC[1][0], Det #2 top) =
 +
 
 +
N(n/pulse, TDC[1][10], Det #3 top) =
 +
 
 +
N(n/pulse, TDC[1][4], Det #5 upstream) =
 +
 
 +
N(n/pulse, TDC[1][14], Det #6 upstream) =
 +
 
 +
|-
 +
|4510  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler =  e+/min
 +
 
 +
N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =
 +
 
 +
N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =
 +
 
 +
N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =
 +
 
 +
N(gamma/pulse, TDC[1][10], Det #3 top) =
 +
 
 +
N(n/pulse, TDC[1][3], Det #4 bottom) = ,  N(n/pulse, TDC[1][2], Det #4 top) =
 +
 
 +
N(n/pulse, TDC[1][9], Det #1 bottom) =
 +
 
 +
N(n/pulse, TDC[1][0], Det #2 top) =
 +
 
 +
N(n/pulse, TDC[1][10], Det #3 top) =
 +
 
 +
N(n/pulse, TDC[1][4], Det #5 upstream) =
 +
 
 +
N(n/pulse, TDC[1][14], Det #6 upstream) =
 +
 
 +
'''Unplugged Beam pulse/trigger/TDC start during run'''
 +
|-
 +
|4511  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler =  e+/min
 +
 
 +
N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =
 +
 
 +
N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =
 +
 
 +
N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =
 +
 
 +
N(gamma/pulse, TDC[1][10], Det #3 top) =
 +
 
 +
N(n/pulse, TDC[1][3], Det #4 bottom) = ,  N(n/pulse, TDC[1][2], Det #4 top) =
 +
 
 +
N(n/pulse, TDC[1][9], Det #1 bottom) =
 +
 
 +
N(n/pulse, TDC[1][0], Det #2 top) =
 +
 
 +
N(n/pulse, TDC[1][10], Det #3 top) =
 +
 
 +
N(n/pulse, TDC[1][4], Det #5 upstream) =
 +
 
 +
N(n/pulse, TDC[1][14], Det #6 upstream) =
 +
 
 +
'''Did not observe a time shift in Detector 1 top compared to run 4508, continuing to take data'''
 +
|-
 +
|4512  || Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 
 +
Positron rate by visual scaler =  e+/min
  
−
N(gamma/pulse, TDC[1][0], Det #2 top) = 1/4
+
N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =
  
−
N(gamma/pulse, TDC[1][1], Det #2 bottom) = 1/4
+
N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =
  
−
N(gamma/pulse, TDC[1][8], Det #1 top) = 1/, N(n/pulse, TDC[1][8], Det #1 top) =
+
N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =  
  
−
N(gamma/pulse, TDC[1][10], Det #3 top) = 1/
+
N(gamma/pulse, TDC[1][10], Det #3 top) =  
  
−
N(n/pulse, TDC[1][3], Det #4 top) =  
+
N(n/pulse, TDC[1][3], Det #4 bottom) = ,  N(n/pulse, TDC[1][2], Det #4 top) =  
  
 
N(n/pulse, TDC[1][9], Det #1 bottom) =  
 
N(n/pulse, TDC[1][9], Det #1 bottom) =  
  
−
N(n/pulse, TDC[1][0], Det #2 top) =  
+
N(n/pulse, TDC[1][0], Det #2 top) =
  
 
N(n/pulse, TDC[1][10], Det #3 top) =  
 
N(n/pulse, TDC[1][10], Det #3 top) =  
Line 59: Line 164:
  
 
N(n/pulse, TDC[1][14], Det #6 upstream) =  
 
N(n/pulse, TDC[1][14], Det #6 upstream) =  
 +
 +
|-
 +
|4513  || Al radiator in, NO TARGET in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 +
Positron rate by visual scaler =  e+/min
 +
 +
N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =
 +
 +
N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =
 +
 +
N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =
 +
 +
N(gamma/pulse, TDC[1][10], Det #3 top) =
 +
 +
N(n/pulse, TDC[1][3], Det #4 bottom) = ,  N(n/pulse, TDC[1][2], Det #4 top) =
 +
 +
N(n/pulse, TDC[1][9], Det #1 bottom) =
 +
 +
N(n/pulse, TDC[1][0], Det #2 top) =
 +
 +
N(n/pulse, TDC[1][10], Det #3 top) =
 +
 +
N(n/pulse, TDC[1][4], Det #5 upstream) =
 +
 +
N(n/pulse, TDC[1][14], Det #6 upstream) =
 +
 +
|}
 +
 +
 +
=Discriminator Threshold study=
 +
 +
Al radiator in
 +
Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all)
 +
Target = DU rod
 +
 +
{| border="1"
 +
| Run # ||LED (mv) || colspan="4"|  Gammas/pulse ||  colspan="4"| Neutrons/Pulse
 +
|-
 +
|colspan="2" |  || 1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2] ||1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2]
 +
|-
 +
|4504  || 10 || 1/13|| || 1/10|| ||  1/391 || ||1/378
 +
|-
 +
|4505  ||  20 || 1/18|| || 1/14|| ||  1/1158 || ||1/922
 +
|-
 +
|4506  || 5 mV || 1/13|| || 1/9|| ||  1/259 || ||1/245
 +
|-
 +
|}
 +
 +
=Production running on Du rod=
 +
 +
 +
Al radiator in
 +
Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all)
 +
Target = DU rod
 +
10 mV  updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
  
  
 +
{| border="1"
 +
| Run # ||e^+/min || colspan="4"|  Gammas/pulse ||  colspan="4"| Neutrons/Pulse
 +
|-
 +
|colspan="2" |  || 1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2] ||1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2]
 +
|-
 +
|4507  ||120 || 1/15|| || 1/11|| ||  1/434 || 1/476 ||1/454 ||
 +
|-
 +
|4508  || 125 || 1/15||1/4 || 1/11|| ||  ||  || || || Photon peak at 323.3 ns for [8]
 +
|-
 +
|4509  || || 1/15||1/4 || 1/11|| ||  ||  || ||
 +
|-
 +
|4510  || ||1/12||1/4|| 1/9||1/13 || 1/387  || 1/371 ||1/409 || 1/228|| unplugged gun pulse around event 300k
 +
|-
 +
|4511  || 1/14 || || 1/3.8|||| || 1/446 ||1/437 |||| ||Photon peak at 323 ns for [8]
 +
|-
 +
|4512  || 1/14 || || 1/|||| || 1/433 ||  |||| ||
 +
|-
 
|}
 
|}
 +
 +
=Production running on Du rod=
 +
 +
 +
Al radiator in
 +
Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all)
 +
Target = DU rod
 +
10 mV  updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.
 +
 +
 +
{| border="1"
 +
| Run # ||e^+/min || colspan="4"|  Gammas/pulse ||  colspan="4"| Neutrons/Pulse
 +
|-
 +
|colspan="2" |  || 1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2] ||1 top [8] || 2 top [0] || 3 top [10]|| 4 top [2]
 +
|-
 +
|4507  ||120 || 1/15|| || 1/11|| ||  1/434 || 1/476 ||1/454 ||
 +
|-
 +
|4508  || 125 || 1/15||1/4 || 1/11|| ||  ||  || || || Photon peak at 323.3 ns for [8]
 +
|-
 +
|4509  || || 1/15||1/4 || 1/11|| ||  ||  || ||
 +
|-
 +
|4510  || ||1/12||1/4|| 1/9||1/13 || 1/387  || 1/371 ||1/409 || 1/228|| unplugged gun pulse around event 300k
 +
|-
 +
|4511  || 1/14 || || 1/3.8|||| || 1/446 ||1/437 |||| ||Photon peak at 323 ns for [8]
 +
|-
 +
|4512  || 1/14 || || 1/|||| || 1/433 ||  |||| ||
 +
|-
 +
|4513 || 1/49 || || 1/|||| || 1/433 ||  |||| ||
 +
 +
|}
 +
 +
 +
[[2nCor_44]]

Latest revision as of 22:57, 30 March 2015

Run # (multihit data) Description
4504 Al radiator in, DU cyl. target in, Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all)

N(gamma/pulse, TDC[1][8]) = 1/13, N(n/pulse, TDC[1][8]) = 1/391 = 0.00255

N(gamma/pulse, TDC[1][10]) = 1/10, N(n/pulse, TDC[1][10]) = 1/378 = 0.00266

4505 Al radiator in, DU cyl. target in, Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 20 mV (all), LED pulse width = 40 ns (all)

N(gamma/pulse, TDC[1][8]) = 1/18, N(n/pulse, TDC[1][8]) = 1/1158 = 0.00086

N(gamma/pulse, TDC[1][10]) = 1/14, N(n/pulse, TDC[1][10]) = 1/922 = 0.0011

4506 Al radiator in, DU cyl. target in, Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 5 mV (all), LED pulse width = 40 ns (all)

N(gamma/pulse, TDC[1][8]) = 1/13, N(n/pulse, TDC[1][8]) = 1/259 = 0.0039

N(gamma/pulse, TDC[1][10]) = 1/9, N(n/pulse, TDC[1][10]) = 1/245 = 0.0041

4507 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = 120 e+/min

N(gamma/pulse, TDC[1][8], Det #1 top) = 1/15, N(n/pulse, TDC[1][8], Det #1 top) = 0.0023

N(gamma/pulse, TDC[1][10], Det #3 top) = 1/11

N(n/pulse, TDC[1][3], Det #4 bottom) = 0.0037

N(n/pulse, TDC[1][9], Det #1 bottom) = 0.0021

N(n/pulse, TDC[1][0], Det #2 top) = 0.0021

N(n/pulse, TDC[1][10], Det #3 top) = 0.0022

N(n/pulse, TDC[1][4], Det #5 upstream) = 0.0005

N(n/pulse, TDC[1][14], Det #6 upstream) = 0.0012

4508 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = 125, 133, 147, 119, 110, 125 e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = 1/4, N(n/pulse, TDC[1][0], Det #2 top) = 0.0025

N(gamma/pulse, TDC[1][1], Det #2 bottom) = 1/4, N(n/pulse, TDC[1][1], Det #2 bottom) = 0.0015

N(gamma/pulse, TDC[1][8], Det #1 top) = 1/15, N(n/pulse, TDC[1][8], Det #1 top) = 0.0023

N(gamma/pulse, TDC[1][10], Det #3 top) = 1/11

N(n/pulse, TDC[1][3], Det #4 bottom) = 0.0043, N(n/pulse, TDC[1][2], Det #4 top) = 0.004

N(n/pulse, TDC[1][9], Det #1 bottom) = 0.0024

N(n/pulse, TDC[1][0], Det #2 top) = 0.0024

N(n/pulse, TDC[1][10], Det #3 top) = 0.0024

N(n/pulse, TDC[1][4], Det #5 upstream) = 0.0005

N(n/pulse, TDC[1][14], Det #6 upstream) = 0.0013

4509 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = 1/3.8, N(n/pulse, TDC[1][0], Det #2 top) = 0.0022

N(gamma/pulse, TDC[1][1], Det #2 bottom) = 1/4.2, N(n/pulse, TDC[1][1], Det #2 bottom) = 0.0014

N(gamma/pulse, TDC[1][8], Det #1 top) = 1/14.7, N(n/pulse, TDC[1][8], Det #1 top) = 0.0022

N(gamma/pulse, TDC[1][10], Det #3 top) = 1/10.4

N(n/pulse, TDC[1][3], Det #4 bottom) = , N(n/pulse, TDC[1][2], Det #4 top) =

N(n/pulse, TDC[1][9], Det #1 bottom) =

N(n/pulse, TDC[1][0], Det #2 top) =

N(n/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][4], Det #5 upstream) =

N(n/pulse, TDC[1][14], Det #6 upstream) =

4510 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =

N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =

N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =

N(gamma/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][3], Det #4 bottom) = , N(n/pulse, TDC[1][2], Det #4 top) =

N(n/pulse, TDC[1][9], Det #1 bottom) =

N(n/pulse, TDC[1][0], Det #2 top) =

N(n/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][4], Det #5 upstream) =

N(n/pulse, TDC[1][14], Det #6 upstream) = 

Unplugged Beam pulse/trigger/TDC start during run
4511 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =

N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =

N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =

N(gamma/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][3], Det #4 bottom) = , N(n/pulse, TDC[1][2], Det #4 top) =

N(n/pulse, TDC[1][9], Det #1 bottom) =

N(n/pulse, TDC[1][0], Det #2 top) =

N(n/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][4], Det #5 upstream) =

N(n/pulse, TDC[1][14], Det #6 upstream) = 

Did not observe a time shift in Detector 1 top compared to run 4508, continuing to take data
4512 Al radiator in, DU cyl. target in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =

N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =

N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =

N(gamma/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][3], Det #4 bottom) = , N(n/pulse, TDC[1][2], Det #4 top) =

N(n/pulse, TDC[1][9], Det #1 bottom) =

N(n/pulse, TDC[1][0], Det #2 top) =

N(n/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][4], Det #5 upstream) =

N(n/pulse, TDC[1][14], Det #6 upstream) =

4513 Al radiator in, NO TARGET in, Current = 800 mA, LINAC pulse width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. Back to LED threshold = 10 mV (all), LED pulse width = 40 ns (all). LED is in updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.

Positron rate by visual scaler = e+/min

N(gamma/pulse, TDC[1][0], Det #2 top) = , N(n/pulse, TDC[1][0], Det #2 top) =

N(gamma/pulse, TDC[1][1], Det #2 bottom) = , N(n/pulse, TDC[1][1], Det #2 bottom) =

N(gamma/pulse, TDC[1][8], Det #1 top) = , N(n/pulse, TDC[1][8], Det #1 top) =

N(gamma/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][3], Det #4 bottom) = , N(n/pulse, TDC[1][2], Det #4 top) =

N(n/pulse, TDC[1][9], Det #1 bottom) =

N(n/pulse, TDC[1][0], Det #2 top) =

N(n/pulse, TDC[1][10], Det #3 top) =

N(n/pulse, TDC[1][4], Det #5 upstream) =

N(n/pulse, TDC[1][14], Det #6 upstream) =


Discriminator Threshold study

Al radiator in Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all) Target = DU rod

Run # LED (mv) Gammas/pulse Neutrons/Pulse
1 top [8] 2 top [0] 3 top [10] 4 top [2] 1 top [8] 2 top [0] 3 top [10] 4 top [2]
4504 10 1/13 1/10 1/391 1/378
4505 20 1/18 1/14 1/1158 1/922
4506 5 mV 1/13 1/9 1/259 1/245

Production running on Du rod

Al radiator in Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all) Target = DU rod 10 mV updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.


Run # e^+/min Gammas/pulse Neutrons/Pulse
1 top [8] 2 top [0] 3 top [10] 4 top [2] 1 top [8] 2 top [0] 3 top [10] 4 top [2]
4507 120 1/15 1/11 1/434 1/476 1/454
4508 125 1/15 1/4 1/11 Photon peak at 323.3 ns for [8]
4509 1/15 1/4 1/11
4510 1/12 1/4 1/9 1/13 1/387 1/371 1/409 1/228 unplugged gun pulse around event 300k
4511 1/14 1/3.8 1/446 1/437 Photon peak at 323 ns for [8]
4512 1/14 1/ 1/433

Production running on Du rod

Al radiator in Current = 800 mA width = 100 ps, Ee = 10.5 MeV, rep. rate = 200Hz, slits are at 351. LED = 10 mV (all), LED pulse width = 40 ns (all) Target = DU rod 10 mV updating mode. Pair spectrometer Det @ 15 mV threshold. Production run.


Run # e^+/min Gammas/pulse Neutrons/Pulse
1 top [8] 2 top [0] 3 top [10] 4 top [2] 1 top [8] 2 top [0] 3 top [10] 4 top [2]
4507 120 1/15 1/11 1/434 1/476 1/454
4508 125 1/15 1/4 1/11 Photon peak at 323.3 ns for [8]
4509 1/15 1/4 1/11
4510 1/12 1/4 1/9 1/13 1/387 1/371 1/409 1/228 unplugged gun pulse around event 300k
4511 1/14 1/3.8 1/446 1/437 Photon peak at 323 ns for [8]
4512 1/14 1/ 1/433
4513 1/49 1/ 1/433


2nCor_44

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