News (as of July 2010):
Updated this web page for the first time in 8 (argh!) years.
The Large Hadron Collider:
- The Large Hadron Collider is just beginning to take data at 7 TeV
center-of-mass energy. The very first collisions were obtained in March 2010,
and as of July 2010, luminosity has reached
1.6*1030/cm2/sec and
an integrated luminosity of 0.3 pb-1 has been collected thus far.
- The goal for the current 20-month data run is to collect 1000 pb-1.
In order to do that, LHC will have to
reach 1032/cm2/sec luminosity and run reliably for most of 2011.
- In 2012, a shutdown of more than a year is planned to make repairs to allow
the LHC to run at 13-14 TeV and increased luminosity.
The Cathode Strip Chamber (CSC) muon detector:
- The CMS detector is working very well, and the CSC system that we have designed
and built starting in 1995 is triggering efficiently on muons and delivering good muon data for
identifying J/Psi, Upsilon, W and Z boson, and even top quark particles (already!)
-
Hauser is now spending most of his time at CERN working as Project Manager for the
Cathode Strip Chamber muon project in the Compact Muon Solenoid experiment.
- Hauser is co-manager of the future endcap muon upgrade project.
A detailed technical proposal is being prepared for this.
CMS Data Analysis:
Current lines of data analysis being followed:
-
The timing accuracy of the CSC detector is being greatly refined and our group is
investigating use of CSC information
in a search for slow particles such as predicted in certain theories of Supersymmetry
(e.g. a Supersymmetric particle that is the "partner" of the tau lepton).
-
The CSC detector is essential for searches for ultra-high energy muons, and we
are looking into the specific issue of identifying single-muon events where the
muon has extremely large momentum. Such events can arise from the decays of
W-prime particles, but are also a generic signature for new physics.
Our group is addressing the experimental challenge of rejecting a
very high fraction of lower-momentum muons such as from the decays of W bosons.