11-11-2016

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Horizontal accelerator side collimator 7 mm, horizontal cell side 19 mm. 3 in of Pb on D30 & D330, 2 in of Pb on upstream side of D210, wax in front of Pb on wall downstream of beam dump

Run # D90 n Rate (Counts/pulse)E-3 Target Configuration
5446 0.53 Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 50 mV, D30 @ -1450V and all other detectors at -1500 V ,
5447 0.34 Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 70 mV, D30 @ -1450V and all other detectors at -1500 V ,
5448 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 30 mV, D30 @ -1450V and all other detectors at -1500 V ,
5449 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V ,
5450 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 60 mV, D30 @ -1450V and all other detectors at -1500 V ,
5451 - MT 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 60 mV, D30 @ -1450V and all other detectors at -1500 V ,
5452 - MT 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V ,
5453 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , removed battleship steel (4" wide [beamleft/right] and 30 inches high [beam up/down], now its 9" wide and 13" high, green poly is on the bottom to prop up the steel
5454 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 6" wide
5455 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 4" wide
5456 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 2" wide
5457 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 0" wide (steel blinders are closed)
5458 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 8" wide (steel blinders are closed)
5459 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 7" wide (steel blinders are closed)
5460 - Th 10.5 MeV , 2 ns FWHM pulse width , 1.1 A Peak , 180.4 Hz , Radiator 1" Al., discriminator thresh 40 mV, D30 @ -1450V and all other detectors at -1500 V , green poly is on the bottom to prop up the steel, steel blinder is 5" wide (steel blinders are closed), poly around Th target

Summary

ToF spectrum for 30, 40 50 and 70 mV thresholds.

ToFVSThresh(Nov11).png


Blinder width study

Blinders 0INto4IN.png