|
|
Status Updates
Note:
Status and ToDo (5/29/02)
It's been ages since we sent out an update on things!
- Full Simulation
- Full simulation using the GISMO package continues to be the
default for generating detector simulation output usable within
both the JAS and ROOT environments. The package writes out events
using the sio file format. The production version (running at SLAC
and NICADD)
incorporates modifications to the Geisha hadronic shower
simulation code.
- The current GEANT4 implementation writes out events in ROOT
format. It is planned to have sio output by the time of the Santa
Cruz workshop. Note that although the Geisha hadronic shower
modifications have not yet been incorporated into GEANT4, many of
the calorimeter distributions (especially in the muon system) show
improvement under GEANT4.
- Work is also underway on the next version of the output, which
will incorporate "generic" tracker and calorimeter hits.
- Background overlays
- Files containing electron-positron pairs, photons and muons have
been obtained from the beam delivery system group. These particles
have been passed through the SD and LD detectors using GISMO,
providing a library of background events.
- A first version of merging code is now available which combines
information from input events and writes out the combined event in
sio format. The Monte Carlo particles are renumbered and appended
to the list. Calorimeter cell energies and MC information are
updated. Tracker hits are simply added to the event. Accounting
for time offsets (especially important for the TPC design) is
currently underway.
- Gamma-gamma to hadron event samples are being generated and will
soon be available for overlaying.
- Event samples containing a full bunch train's worth of machine
backgrounds are available.
- LCDRoot
- RootApps-3.5 is the current release, which builds upon Root
version 3.01.06 or 3.02.07.
- hep.lcd package (and
JAS analysis)
- JAS 2.2.5 is the current release.
- An update to the lcd package is planned for the Santa Cruz
meeting.
- Full reconstruction
- Tracking studies are underway to understand the effects of
backgrounds on both efficiency and resolution.
- Track fitting is being improved.
- Areas needing immediate attention are hit smearing and merging
strategies in the various tracking subdetectors, and pattern
recognition in the forward regions and central region for the
silicon strip detector.
- A photon-finding package is being planned for release by Santa
Cruz.
- Clustering studies are ongoing, primarily in the hadronic
calorimeter. 2D and 3D clustering algorithms will be released for
Santa Cruz.
- Energy-flow algorithms are being worked on by several
individuals. More work is needed in hadronic shower
characterization and track-cluster association.
- The current full simulation only supports projective (tower)
geometries, a generic cell description is being worked on.
- Documentation
- We are working on improving the LCD documentation for the Santa
Cruz workshop. Constructive input from users is the best way to
target the limited amount of manpower. Let us know what is
missing!
|