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SoLID PVDIS

SoLID PVDIS. Achievements and the way forward . Achievements. Pre CDR finished. (Modifications requested) We now have a reasonable design for all of the detectors, etc. This was a huge job. PVDIS after Higgs. Theory update: working on an Annual Reviews paper with Jens, Sony, and Chuck.

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SoLID PVDIS

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  1. SoLID PVDIS Achievements and the way forward

  2. Achievements • Pre CDR finished. (Modifications requested) • We now have a reasonable design for all of the detectors, etc. This was a huge job.

  3. PVDIS after Higgs • Theory update: working on an Annual Reviews paper with Jens, Sony, and Chuck. • Good New’s: LHC does not measure C2’s

  4. Baffle History • We have a new, 12 Baffle system. • Works well, especially for the trigger. • Have identified many criteria. • Anticipate additional improvements

  5. Post CDR • Monte Carlo with all of the detectors. • Further optimization of baffles. Note that GEM rates are smaller with new baffles. • Target cell design. • Tracking • More realistic particle ID based on full Monte Carlo, using event shapes, etc. • Get serious with radiative corrections.

  6. Monte Carlo • We have made progress on a unified Monte Carlo that will include all devices. • Seamus and others will discuss the status.

  7. Summary of Backgrounds Each background must be understood for each detector

  8. Gaps in baffles not biggest problem Note: efficiency for gamma conversion in GEM’s varies by a factor of 3 due to differences in the gamma energy. All backgrounds Line of sight only

  9. Photons from Mollers These photons have higher E and do not point to beam line Photon from ~30 MeV Moller electron s that point at detectors

  10. Example: Hadron Event GEM hits 12 Baffles help

  11. Last Baffle • Location: Before GEMS, Between GEMS, or after Gems? • Probably can find room to block photons behind cerenkov mirrors; reduce rates at low R, where the problem is worse. • Could be a big help in tracking.

  12. Location of last baffle

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