Primary Collimator Live Page
Tony's Status Report
Klaus's Status Report
Michael's Web Page
Qweak Simulation Forum
Keep Out Zones a la Allena
Previous Reports
Virginia Tech Update for Tracking Group,
|
|
Figure 1 - Picture of the entire beamline (y dimension blown up). |
The goal of the beamline design is to keep "0 bounce" electrons from hitting the beampipe downstream of the downstream cleanup collimator, while allowing the desired angular range for the luminosity monitors. The scenario we are focussing on has two plugs, one in each of the cleanup collimators.
In order to gauge the impact of the two plugs on the experiment, we would like to know the photon rates at Region II (and the GEM and cerenkov bars). We are going to make the necessary histograms during the simulation in order to get around the limited ntuple size and length of time it takes to analyze. This should allow us to get reasonable statistics for argon parameterization, as we can just run the simulation for as long as we need to.
We will be iterating with the Jefferson Lab designer to check that the beamline is feasible at various steps in the process. We are trying to incorporate elements of the beamline design that will affect our acceptances and our background rates, such as flanges and lead sheilding around the beampipe. As we progress we will try to optimize the shielding, but the first step was to put as much shielding in each region as would fit.
All the cathode planes for the new prototype/spare chamber have been stretched.
The PC Boardmaker is now up and running, and the first of our sense planes is being strung.
