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Status of GenFwkInt
- Generators incorporated
- Random numbers
- Beam parameters
- Line shapes
- Persistence of beam parameters
- Future tasks
Generators Incorporated
- EvtGen: Upsilon(4S), Jetset, koralb
- SingleParticle: user gives P, q, f ranges
- StdHepRead: read ascii files (2-photon)
- HemiCosm: cosmic muons
- Bhwide: Bhabhas (Ralph Mueller)
- GeneratorsQA package used for QA
Random Numbers
- Had numerous discussions and ideas
- Eventually decided to use RandControl:
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- Uses ranecu
- Can skip any number of seeds, accounting, for
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- run number
- event number
- computational step (Gen, Sim, Digis...)
- Will implement in a couple of weeks
Beam Parameters
- GfiBeams module holds
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- e+ and e- 3-momenta and error matrices
- collision point coordinates and error matrix
- Simulates any Gaussian beam configuration
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- Beam axis -24 mrad inclination
- Use in event generation:
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- e+ and e- “selected” independently from beams
- Underlying generator given only CM energy
- Event boosted to lab, rotated away from z-axis
Line Shapes
- CM energy distribution automatic:
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- Continuum:
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- Resonances:
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- Upsilon(4S):
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- ISR done only in Jetset, neglected in BBbar
* 1/s effect is 10-5 over 6 MeV at 10.58 GeV
Persisting Beam Parameters
- When taking data, beam parameters will be
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- measured
- put in the conditions database
- read for use in event generation and analysis
- We need some “PEPII” database
Future Tasks
- Implement RandControl
- Store beam parameters
- Include Bhwide and additional generators, as the need arises
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