Difference between revisions of "Roadmap toward a decision for Bcal Readout"

Revision as of 14:47, 17 June 2009

Roadmap toward a decision for Bcal Readout

Status and schedules can be found in the report at the Jan collaboration meeting.

1. Technical specifications, already outlined in GlueX-doc-795
   • SiPM tests are underway
   • See various technical studies of alternative design
2. Geometry, especially related to acceptance gap between Bcal and Fcal. Detailed plan should be developed.
   • Light guides and inactive material is different for the two options. We need to simulate the effect of each
   • Precise configuration of light guides for FM pmts on the upstream end, where the field at the end of the Bcal exceeds 0.5 T. See light guides studies.
   • Detail description of cables and electronics on each detector
3. Granularity.
   • Optimization of distribution between inner and outer detectors
   • Which detectors should have discriminators and TDCs
   • Study of signal splitting, choice of discriminator - has an impact on number of cables.
4. Resolution
   • Impact of dark rate on resolution
   • Light collection
   • Complete simulation studies for correct thresholds for the FM.
   • Energy threshold for various assumed PDE and DR combinations.
   • Studies of timing resolution. Realistic simulation for both photons and charged particles
   • Resolution for various geometry options (mentioned above).
5. Detailed B-field plots including dependence on B-field components
   • Magnetic fields at the location of detector pmts
6. Dynamic range required, especially for near pmt/small angle showers.
7. Private:Readout Cost Estimates

Silicon PM

• SensL SiPMs
• File:SiPM PDEvsDR A.pdf

Fine Mesh PMT

• Alternative readout

Light Guides

• Light Guide Collection

Magnetic Field

• Field at the location of pmts