1 / 13

Anticipated Muon Rates

Anticipated Muon Rates. Random Information that might be Related to the Anticipated Muon Rates. Existing (ISIS-trip limited) measurements Comparison with new beamline Target test Conclusion. Existing Measurements. Existing Measurements. Comparison. Comparison. Proton beamline, not muon

mechelle-emerson
Download Presentation

Anticipated Muon Rates

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Anticipated Muon Rates Random Information that might be Related to the Anticipated Muon Rates Existing (ISIS-trip limited) measurements Comparison with new beamline Target test Conclusion

  2. Existing Measurements

  3. Existing Measurements

  4. Comparison

  5. Comparison Proton beamline, not muon 8” beampipe Collection at 40o, not 25o Production at 626MeV, not 800 50Hz………

  6. Target

  7. Target Target: 50 Hz + 150 Hz motion: 2 ms 20 ms Beam bump: ~1ms <650 MeV

  8. Pion Production LAHET (MCNP) 626 MeV 800 MeV • Factor ~30 increase at 430 MeV • ~30k max. /s with old beamline in new position

  9. ~3x1011 protons ~7x1011 protons ~2x109 protons ~1x1010 protons Target Test Presented previously Tough analysis Results not entirely obvious to interpret

  10. Beamloss – c/o Dean Adams Beamloss: protection & diagnosis Currently from BLMs: Inhibit: 20 pulses > V in 10min - beam off for 1.5s Trip: another inhibit within 10s – upset operators!  MICE can inhibit, but can’t trip! “ “ BIMs: Immediate trip : 3 consecutive pulses exceed tolerance MICE can’t do this Average Trip: 25 pulse rolling average MICE can do this with ~1013 in a single pulse

  11. Beamloss – c/o Dean Adams From Christmas 07 from BLMs: Trip: 20 consecutive pulses > V  MICE can’t trip! “The potential ability to take 1e13 proton without tripping is worrying. We may have to produce some trip derived on a single integrated blm measurement running on the MICE pulse. Changing the pulse counts to 1 would also be a solution but its effect on ISIS operation would require investigation.”

  12. 0.2V ~1010 protons ~3x1011 protons ~7x1011 protons ~2x109 protons ~1x1010 protons Target Test BIM immediate trip

  13. Conclusion To know real pion/muon rate: need another test The BLM’s surrounding the MICE target in super period 7 have a tolerance level of 0.05 Vs under normal operation. The old HEP target , (50Hz operation) , tolerance levels were set to 0.2Vs. It is conceivable that > 0.2 Vs is satisfactory for MICE operation since the target operates at only 1 Hz. Suitable machine activation measurements should be performed to find an acceptable level.

More Related