Description
Coherent muon to electron conversion is a charged lepton flavour violating process that provides an exceptionally clear signature for new physics searches beyond the Standard Model. The COMET experiment at J-PARC in Tōkai, Japan, will search for this transition with a world leading single event sensitivity of $3×10^{−15}$ in Phase-I, scaling to $1×10^{−17}$ for Phase-II. The experiment utilises the world’s most intense pulsed muon beam to capture muons in aluminium targets, searching for a monoenergetic 105 MeV/c electron signature distinct from the standard decay in orbit background. Any such observation of the high momentum electron will be unambiguous evidence of physics beyond the Standard Model.
The primary physics detector for Phase-I is the Cylindrical Detector (CyDet) system, consisting of a cylindrical drift chamber (CDC) and a cylindrical trigger hodoscope (CTH). The CTH detector provides the primary trigger for high momentum electrons and provides critical timing information. A CTH time resolution of better than 1 ns is essential for the precision required in the CDC momentum reconstruction. This talk will provide an overview of the CTH detector design and report on the recent progress made in the detector preparation leading up to the final construction before COMET Phase-I data taking begins.
| I am the presenting author | Yes |
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