Difference between revisions of "PS instrumentation studies"
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Relative shift of measured photon energy for the beam displacement of delta x = 2.5 mm. The magnetic field is set to 1 T. | Relative shift of measured photon energy for the beam displacement of delta x = 2.5 mm. The magnetic field is set to 1 T. | ||
| − | [[Image:ps_beam_res.jpg |350px]] Almost no bias of the measured photon energy is | + | [[Image:ps_beam_res.jpg |350px]] Almost no bias of the measured photon energy is expected for E(e)/E(gamma) = 0.5. |
# Counter Rates | # Counter Rates | ||
Revision as of 10:45, 3 May 2010
- Decided what magnet to use: 2 m long 30D72 magnet with the maximum field of 2 T.
- The vaccum chamber design has to be optimized. The current length of the VC is 1.5 m.
- Consider symmetric detectors covering the energy range from 3 GeV to 6 GeV.
Detector width (position from the beamline) as a function of the magnetic field:
For the magnetic field of 1.5 T the detector width should be about 30 cm.
Contribution to the position/energy resolution from multiple scattering.
The converter is placed 1 m in front of the magnet. B = 1 T.
(the energy resolution of the scintillator counters corresponding to the default design is 12 MeV for 24 counters and 17 MeV for 8 counters).
- Impact of the beam profile distribution and beam motion on the energy resolution
Relative shift of measured photon energy for the beam displacement of delta x = 2.5 mm. The magnetic field is set to 1 T.
Almost no bias of the measured photon energy is expected for E(e)/E(gamma) = 0.5.
- Counter Rates
