Simulation Meeting March 28 2022 10AM ET
- Update on LAM simulation: Devi Adhikari docDB881
- Boundary dose estimates: Vassu Doomra [postponed for next week]
Sakib, Probir, Eric, Devi, Robin, Vassu, Kashy, Andrew Gunsch, KK, Mark, Elham, Justin, Sudip, Damon, Juliette, Paul King, David Armstrong, Kent, Dustin, Ciprian, Micheal Gericke, Zuhal, Nazanin, Sandesh, Chandan
- Probir: I will provide a list of materials and their locations to the ferrous material study group for confirming their use in the Moller setup.
- Devi: Presented a comparative study (between old and new geometry) for the LAM.
- The new geometry has a split collar 2, the drift pipe.
- With the new geometry, the LAM electrons and pion rates (both primary and secondary) are higher (~x2) than the previous geometry using the PMTShielding branch.
- The excess rate is due to mainly secondaries produced in the upstream part of collar 2 and from the downstream flange of the drift pipe (~50% of the excess rate). These are due to secondary particles with lower energies.
- A simulation study with larger flange IR, shows a reduction of secondary background for the LAMs.
- A detailed statistical analysis of the effect of secondary on counting statistics is presented. Suggestions from KK regarding a better way of calculating the statistical width.
- Dustin: Since the secondary particles will be at a different angle than the primaries, the optical photon yield from secondaries would be suppressed, and hence any analysis considering all secondaries would give an upper bound of the noise.
- Dave Kashy: We can increase the flange IR if that is required. Mark: We are not sure yet whether that is absolutely required.
- Cip: Most likely, the new geometry misses the collar1, Devi should pull the latest developed branch (where the overlap issues are resolved) and simulate it again.
- We decided to keep the drift pipe IR at the present IR values.
- Dave Kashy: Provided a list of the Halla floor steel material to the physicists to implement in the simulations.
- Cip: talked about it in the ferrous material study group, and it seems not very important. But, this is on our plate.
- Eric: Any decision was made regarding the 16 bellow at the target region.
- Cip: There were some communications with Dave Meekins, and we update on that soon.
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