MilliQan Experiment

The milliQan Experiment is a dedicated milli-charged particle (mCP) detector at LHC interaction Point 5 that will extend the sensitivity of the LHC physics program into important, but otherwise uncovered, territory. The detector is a relatively inexpensive scintillator array placed such that it is well shielded by underground rock yet close enough to the CMS interaction point that it intercepts an appreciable flux of any mCPs produced in LHC collisions.

Approach

The milliQan collaboration includes 26 physicists from 8 institutes in the US, Europe, and Middle East.
TThe proposed milliQan Experiment will be installed in the PX56 drainage gallery located above the Compact Muon Solenoid (CMS) experimental cavern (UXC). This area is managed by CMS affording an opportunity to leverage existing CMS infrastructure through a mutually beneficial arrangement with CMS.
R&D for a complete milliQan detector is now at an advanced stage, informed by detailed GEANT simulations, and in situ data obtained from the 1% demonstrator that not only validates the conceptual design, but already sets new constraints on heavy fractionally charged particles.