Minutes for D0 Simulation Meeting
Meeting Date: January 17, 2001 (Wednesday)
Meeting Time: 1:00pm - 3:00pm
Meeting Location: 9th Circle
This meeting is devoted to the discussion of
simulating pileup with real data.
Right now all the overlapping events are from MC minbias. But
for Run II analysis, we need to be able to do the overlapping
events with the real data minbias events. The current situation
is that we have
SimChunk --> digiChunk --> unpackChunk --> RawDataChunk
In order to use pileup package to do the overlapping,
We need to reverse the above chain and need to do this with:
RawData --> unpack --> digi --> sim
The steps from rawdata to unpack and from unpack to digi are exist.
The tasks need to be done:
- digi --> sim
- the new SimChunk will not be the same as the MC SimChunk,
so need to recognize a simchunk is from MC or from real data.
- need this for each detector.
- need to do the cal weight with this.
M. Hildreth: Why not do pileup on digi chunks?
Serban: This will need to rewrite the pileup package.
Laurent: Pileup at digi level will loose information.
e.g. digi can be after threashold cut.
D. Coppage: digi to sim will not give z position, only strip
position in x and y.
M. Hildreth agreed to provide a scheme as a proposal. Then each subdetector
will look at it and decide what to do for their detector. Mike will send
the proposal next week.
May 1: CFT will be ready.
June 1: The rest of detectors will be ready.
Qizhong Li