Speaker
Tao Huang
(Texas A & M University (US))
Description
A large increase in the instantaneous luminosity of the upgraded LHC
complex has the potential of significantly degrading the performance of
the CMS Level-1 muon trigger in the forward region. Deployment of a new
GE1/1 detector system based on the novel GEM technology and its
integration with the existing CSC chambers allows to alleviate these
concerns. The exceptionally high rate of incident particles in the very
forward region makes GEM an excellent technology choice to ensure high
muon hit reconstruction efficiency. We will show that integration of the
information from the new GE1/1 and existing CSC chambers in station
ME1/1 at the level of online electronics allows for a vastly improved
muon momentum resolution of the Level-1 trigger. With the upgrade, the
CMS muon trigger in the very forward region will see an order of
magnitude decrease in the trigger rate and an increase in trigger
efficiency allowing CMS to maintain low muon $p_T$ thresholds. The
latter is critical for many searches and measurements, both in the Higgs
domain as well as in scenarios with hidden sectors, SUSY in compressed
scenarios etc. Similar upgrade of CMS with GE2/1 system will reinforce
physics performance gains in the high-luminosity LHC operations.
The importance of the GEMs upgrade will be high even in the
highest luminosity operating regime when the CMS deploys a tracking
trigger system, as standalone muon trigger will maintain CMS sensitivity
to new physics scenarios predicting existence of new long-lived
particles decaying away from the interaction point.
| Oral or Poster Presentation | Oral |
|---|
Authors
Alexei Safonov
(Texas A & M University (US))
Jason Lee
(University of Seoul, Department of Physics (KR))
Slava Krutelyov
(Texas A & M University (US))
Sven Dildick
(Texas A & M University (US))
Tao Huang
(Texas A & M University (US))
