Difference between revisions of "Mott Run 2 Journal"
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# Beam diagnostics - Test harp, BCM calibration, quick emittance method | # Beam diagnostics - Test harp, BCM calibration, quick emittance method | ||
| − | = Run II Proposed Plan (9 shifts 10/23 DAY - 10/26 OWL) | + | = Run II Proposed Plan (9 shifts 10/23 DAY - 10/26 OWL) = |
== 2.0 shifts - Good knowledge of beam (energy, energy spread, emittance) == | == 2.0 shifts - Good knowledge of beam (energy, energy spread, emittance) == | ||
Revision as of 06:51, 7 October 2015
Prep and HCO w/o beam
- (John) 31 MHz laser -
- (Riad) Test laser RF trigger at DAQ
- (Joe) Make a photocathode – SL5247-4 (52471-1 was used for Run I, but it's being removed from Gun2 next week)
- (Marcy) Check Mott vacuum, configuration (hipot 3D01 again?)
- (Joe) Cycle target ladder, test camera, test magnets, test 2D harp
- (Riad/Daniel) Check HV, check DAQ, Analysis, Macros ready for 31 MHz
Pre-Run Beam Setup and Tests (2 shifts)
- Recovery to FC2 @ 6.3 MeV by 10/15
- Mott beam test - Test 31 MHz synchronization, set L/R/U/D delays, set PMT HV, check PMT response
- Beam diagnostics - Test harp, BCM calibration, quick emittance method
Run II Proposed Plan (9 shifts 10/23 DAY - 10/26 OWL)
2.0 shifts - Good knowledge of beam (energy, energy spread, emittance)
- Set KE=5.0 MeV
- Measure emittance at MQJ0L02
- Measure energy spread at IHA2D00
- Verify BCM calibration good
- Calibrate PITA IHWP=in/out
- Setup beam to Mott, check PMT HV, TOF spectra, set thresholds HI, check instrumental asymmetry
- Setup spin direction, use Mott for final adjustment
(3.5 shifts) Target thickness extrapolation at KE=5.0 MeV
- Use the 10 foils with 25mm aperture spanning 8 nominal thicknesses (0.05, 0.05, 0.225, 0.35, 0.35, 0.50, 0.625, 0.750, 0.87, 1.0)
- Interleave 1um gold foils to demonstrate stabiilty