Difference between revisions of "03-26-2015"

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Revision as of 15:09, 27 March 2015

TDC calibration curve:

Mean x (x̄): 1339.4

Mean y (ȳ): 2272.8.

Intercept (a): 270.7

Slope (b): 1.4948

Regression line equation: y=270.7+1.4948*x

dt/ch = 1/1.4948 = 0.668 ns/ch

Single hit TDC calibr.png


Run # Description
8839 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, no target, 50 mV LED (all), 40 ns LED (all), 1cm Al radiator,

N(gamma, TDC24) = 1/6.7

8840 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, no target, 50 mV LED (all), 40 ns LED (all), 1" (8 plates) Al radiator,

N(gamma, TDC24) = 1/7.5

8841 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, no target, 50 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side.

N(gamma, TDC24) = 1/28

8842 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 50 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/23

8843 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 30 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/13, N(n, TDC26) = 1/1160

8844 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 20 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/11, N(n, TDC26) = 1/1092

8845 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/8, N(n, TDC26) = 1/444

8846 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 5 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/8, N(n, TDC26) = 1/300

8847 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 1/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/14, N(n, TDC26) = 1/9909

8848 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/8, N(n, TDC26) = 1/419

8850 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 179.

N(gamma, TDC24) = 1/8, N(n, TDC26) = 1/530

8851 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 122.

N(gamma, TDC24) = 1/10, N(n, TDC26) = 1/487

8851 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350.

N(gamma, TDC24) = 1/9, N(n, TDC26) = 1/563

8852 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350. Det #2 is shielded w/ 4" of Pb (placed on a stand close to the DU cyl. target (~30 cm away)) to see how the photon beam is scattered by the target and surrounding.

N(gamma, TDC24) = 1/8, N(n, TDC24) = 1/355,

N(n, TDC26) = 1/360

N(gamma, TDC18) = 1/7, N(n, TDC18) = 1/271

8853 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350. Det #4 is shielded w/ 4" of Pb (placed on a stand close to the DU cyl. target (~30 cm away)) to see how the photon beam is scattered by the target and surrounding.

N(gamma, TDC18) = 1/13, N(n, TDC18) = 1/1053

8854 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350. Det #1 is shielded w/ 4" of Pb (placed on a stand close to the DU cyl. target (~30 cm away)) to see how the photon beam is scattered by the target and surrounding.

N(gamma, TDC24) = 1/25, N(n, TDC24) = 1/1123

8856 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350. Pb brick is removed

N(gamma, TDC24) = 1/13, N(n, TDC24) = 1/484

8857 500 ps pulse width, 800 mA peak current, 200 Hz rep. rate, DU cyl. target in, 10 mV LED (all), 40 ns LED (all), 1" Al radiator, 3/4" Pb collimator/Pb shielding wall on the accelerator side. Slits are at 350. Pb brick is removed. Test w/ gated scaler to observe multi hit effect. Det #2 (top, TDC16) is observed.

N(gamma, TDC24) = 1/, N(n, TDC24) = 1/

MultiHit data

Run # DAQ1 Run # DAQ2 Description
8857 4481 DAQ1 79273 beam pulses, Scaler = 20512 (DAQ1 TDC16 hits = 20440); daq2: 55244 beam pulses, in TDC[1] 13810 TDC hit #1, 296 Hit #2, 29 hit #3 , 2 hit #4s
4484 high beam current 1.6 A peak current
4485 low beam current 0.4 A peak current, 10 mV LED threshold
4486 low beam current 0.4 A peak current, 50 mV LED threshold
4487 high beam current 1.6 A peak current, 10 mV LED threshold
4488 high beam current 1.0 A peak current, W = 50-150ps, 10 mV LED threshold, n(fiss/pulse) = 1.6, DU cyl in,

N(gamma/pulse, Det# 2 top, single hit) = 1/3,

N(n/pulse, Det# 2 top, single hit) = 1/340

R4488 overlay det1.png

4489 high beam current 1.0 A peak current, W = 50-150ps, 10 mV LED threshold, long Al rod target in

N(gamma/pulse, Det# 2 top, single hit) = ,

N(n/pulse, Det# 2 top, single hit) =

4490 high beam current 1.0 A peak current, W = 50-150ps, 10 mV LED threshold, NO target

N(gamma/pulse, Det# 2 top, single hit) = ,

N(n/pulse, Det# 2 top, single hit) =

R4489 overlay det1.png

4491 high beam current 1.0 A peak current, W = 50-150ps, 50 mV LED threshold, NO target
4492 high beam current 1.0 A peak current, W = 50-150ps, 50 mV LED threshold, NO target, Very long signal cable used for Det 1 (bottom, multi hit TDC9) to see the behaviour of the reflection.
4493 high beam current 1.0 A peak current, W = 50-150ps, 50 mV LED threshold, D2O target in, Very long signal cable used for Det 1 (bottom, multi hit TDC9) to see the behaviour of the reflection.
4494 high beam current 1.0 A peak current, W = 50-150ps, 10 mV LED threshold (Det 1 bottom 5 mV LED), D2O target in, Very long signal cable used for Det 1 (bottom, multi hit TDC9) to see the behaviour of the reflection.
4495 high beam current 1.0 A peak current, W = 50-150ps, 10 mV LED threshold (all), D2O target in, Very long signal cable used for Det 1 (bottom, multi hit TDC9) to see the behaviour of the reflection.
4500 Cosmic rays overnight test, Det #1 (bottom) is the TDC start, 30 mV LED threshold (all), Very long signal cable used for Det 1 (bottom, multi hit TDC9).

R4500 overlay det1 bot1.png

Zoomed in 380 - 450 ns region:

R4500 overlay det1 bot1 zoom.png


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