Joseph Proulx

University of Colorado, Boulder - HEP

Scintillator-Based Calorimetry for the NLC

This section includes links to plots and analysis of a scintillator-based calorimeter for the NLC

Featured plot

Initial steps toward creating a full particle flow algorithm for use with the Colorado offset scintillator/tungsten EM calorimeter.

Previous Plots

Evidence that Anti-DID field does not adequately bend field lines to exit hole. Though the spreading of the solenoid field lines (modeled with a field map) means that this effect is not as large as it seems when one assumes a constant field, the effect quite significant nonetheless.

Single Photon Resolution at Room Temperature using Silicon Photomultipliers

Click on the plots for more information.

Talks

Snowmass ILCWS 2005
- SUSY WG Presentation 17 Aug 2005
- MUON WG Presentation 22 Aug 2005

Texas ALCPG 2003
- Results of SUSY studies of the Colorado group that I presented at the Arlington meeting can be found here.
- A larger document which contains these and more of our results can be found here.
- Some of my plots from the Arlington, TX ALCPG meeting
  - Position resolution of normal-incidence photons postscript file.
  - Ratio of position resolution for two geometries postscript file.
  - Position of particle vs. Energy-weighted center of cluster postscript file.
  - Position of particle vs. Measurement of cluster (only non-offset tiles) postscript file.
  - Position of particle vs. Best measurement of position postscript file.

Papers

Here are some short reports on my work.

Memo on smear-mode detector simulation.

Plot Directories

1 Feb. 2005

Other recent plots on calorimetry

Position resolution as a function of the position of the incident photon postscript file.

Supersymmetry Simulations for the NLC

Results of SUSY studies of the Colorado group that I presented at the Arlington meeting can be found here.
A larger document which contains these and more of our results can be found here.

We are currently beginning to generate Standard Model backgroud data from three-body processes, notable e+e- -> e nu W. This is substantially more difficult that generating two-body processes because of the complexity of the phase space. It is not possible in general to determine reasonable kinematic cuts to keep the cross sections from diverging, as is possible in two-body processes. Here is a plot of acceptance and loss of events as a function of cuts on the maximum event weight. (The data set was generated by CompHEP).

Plot of acceptance and rejection of CompHEP weighted events in Postscript and GIF formats.

Here are the ISAJET parameters, cross sections, and branching ratios for the nine SPS (Snowmass Points and Slopes) parameter points from the 2002 St. Malo conference:

Postscript version Portable Data Format

Contact

on campus: Duane Physics Building, room E218

campus mail: Campus Box 390, Boulder, CO 80309

lab phone: (303) 492-8719

email: my last name at pizero.colorado.edu