The MICE Muon Beam on ISIS and the beam-line instrumentation of the Muon Ionization Cooling Experiment

TL;DR

The paper describes the construction and characterization of the MICE Muon Beam at ISIS, including its instrumentation and performance metrics, to support the demonstration of muon ionization cooling for future particle physics applications.

Contribution

It details the development and characterization of the MICE Muon Beam and beam-line instrumentation, crucial for studying muon cooling techniques.

Findings

Muon rate reaches 30 KHz at 1 V beam-loss signal

Negligible pion contamination in the muon beam

Successful characterization of the beam instrumentation

Abstract

The international Muon Ionization Cooling Experiment (MICE), which is under construction at the Rutherford Appleton Laboratory (RAL), will demonstrate the principle of ionization cooling as a technique for the reduction of the phase-space volume occupied by a muon beam. Ionization cooling channels are required for the Neutrino Factory and the Muon Collider. MICE will evaluate in detail the performance of a single lattice cell of the Feasibility Study 2 cooling channel. The MICE Muon Beam has been constructed at the ISIS synchrotron at RAL, and in MICE Step I, it has been characterized using the MICE beam-instrumentation system. In this paper, the MICE Muon Beam and beam-line instrumentation are described. The muon rate is presented as a function of the beam loss generated by the MICE target dipping into the ISIS proton beam. For a 1 V signal from the ISIS beam-loss monitors downstream of our target we obtain a 30 KHz instantaneous muon rate, with a neglible pion contamination in the beam.