The milliQan experiment: search for milli-charged particles at the LHC

Matthew Citron
(UC Santa Barbara)

The milliQan experiment is a detector proposed to search for milli-charged particles that arise in dark sector models and may be produced at the LHC. The detector will consist of several layers of long scintillating bars pointing towards the interaction point at CMS, paired with high-gain, low-noise photomultiplier tubes capable of measuring a single scintillation photon. In the autumn of 2017 a 1% scale "demonstrator" was installed at the planned site in order to study the feasibility and develop understanding of the experiment, focusing on various background sources such as radioactivity of materials, PMT dark current, cosmic rays, and beam induced backgrounds. In this talk I will discuss the general concept of the experiment, the results from the demonstrator, and the plan for the future.