Difference between revisions of "1-2-07 Tuning"
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| − | PMT HV = | + | PMT HV = 1120 Volts |
Disciminator = 200 mV | Disciminator = 200 mV | ||
| + | |||
| + | 100ns | ||
Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination. | Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination. | ||
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#16k/min : Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, int over RF pulse, block out | #16k/min : Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, int over RF pulse, block out | ||
#850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out | #850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out | ||
| − | #:8 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential | + | #:2.8 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''RF''' pulse, block out, Decrease accel cavity potential |
| − | #: k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over | + | #:2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over '''Gun''' pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode |
| + | |||
| + | We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse. In other words the Field emmision electrons were almost eliminated. Although the gun pulse was 100 ns long | ||
Revision as of 19:37, 3 January 2008
We just received authorization for electrons into the experimental cell.
PMT HV = 1120 Volts
Disciminator = 200 mV
100ns
Before doing that we made measurements in the accelerator hall using a scintillator. An aluminum brick was placed in front of the scintillator in order to determine gamma contamination.
- 16 k/min :Gun off, 90 degree bend, integrate over RF pulse, alum block covereing scint
- 6.5k/min: Gun off, tuned to zero degree port, in RF pulse, alum block covereing scint
- 50k/min : Gun off, 90 degree bend, over RF pulse, alum block out
- 16k/min : Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, int over RF pulse, block out
- 850 /min: Gun off, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out
- 2.8 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over RF pulse, block out, Decrease accel cavity potential
- 2.3 k/min : Gun On, 90 degree bend dipoles looking at 15 MeV side of pulse, integrate over Gun pulse, block out, Decrease accel cavity potential, small voltage on anode, small voltage on anode
We were able to accelerate electrons to the Accelerator side of the 1/8 inch collimator and get a rate of 60 Hz within the Gun pulse and zero electron were observed outside the gun pulse. In other words the Field emmision electrons were almost eliminated. Although the gun pulse was 100 ns long