Difference between revisions of "PhotoFiss 3-4-11"
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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. | 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 | + | 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. |
[[File:Scope Picture 46.png | 200 px]] | [[File:Scope Picture 46.png | 200 px]] | ||
Revision as of 15:37, 8 March 2011
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.
Channel 1 is the ADC integration gate width, Channel 2 is the output of one FC pixel, and channel 4 is the Beam gate.