PhotoFiss 3-4-11

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TDC Map

TDC Chan Detector
1 Event Trigger
12 Sofiia (neutron detector Beam Right down)
13 Natali (neutron detector Beam Left down)
14 Irina (neutron detector Beam left center)
15 Polina (neutron detector Beam left top)

Runs

Date Run Number Comment
3/4/11 1831 25 MeV FC test, see scope picture #46
3/4/11 1832 FC test, 3mm vertical Al collimation in front of FC
3/4/11 1834 FC 9V battery test on each channel
3/4/11 1835 FC test with beam-on same results as run 1832
3/4/11 1836 FC test bending beam down with 0-100A
3/4/11 1837-47 FC Calibration beam down 10A step size (need to move FC up)
3/4/11 1848-57 FC Calibration beam down 10A step size
3/4/11 1858-67 FC Calibration beam up 10A step size
3/4/11 1868-9 Dr. Dale's collimation, no results laying Al bricks horizontally
3/4/11 1870 Dr. Dale's collimation, weird results
3/4/11 1871-2 Dr. Dale's collimation works
3/4/11 1873-5 Wedged Dr. Dale's collimation and swept beam using kickers
3/4/11 1877-99 Kicker Magnet calibration using view screen
3/4/11 1900 Kicker magnet off, Radiator in, Zinc Sulf view screen beam size measures 6cm diameter
3/4/11 1901 1st attempt at 25 MeV ToF Neutrons...TDC problems
3/4/11 1903 Fixed TDC problem, short run

Scope Pictures

Below is a picture of a FC pixel (0.6 cm^2 Al 3" deep) and the ADC integrate gate used to measure the charge deposited on that pixel during the gate. The picture was taken just before run 1831.

The 40 mV amplitude pulse is shown on top of the RF noise. The pulse is produced by a 20 ns wide electron pulse containing a peak current of 500 mA. Beam energy is 25 MeV.

Scope Picture 46.png

Channel 1 is the ADC integration gate width, Channel 2 is the output of one FC pixel, and channel 4 is the Beam gate.

Lab Book

File:March4.pdf

https://wiki.iac.isu.edu/index.php/Feb_PhotFisRun_44MeV_March_2011[ Go Back]