Studies of a Target System for a 4-MW, 24-GeV Proton Beam

Local Contact: H. Haseroth We propose to perform a proof-of-principle test of a target station suitable for a Neutrino Factory or Muon Collider source using a 24-GeV proton beam incident on a target consisting of a free mercury jet that is inside a 15-T capture solenoid magnet. This test could be performed in the TT2A tunnel of the NTOF proton line (upstream of the spallation target). The tests would require only ≈ 100 fast-extracted pulses of full PS intensity, delivered in a pulse-on-demand mode of operation over about 10 shifts. The main piece of apparatus is the LN2-precooled, 15-T copper magnet of total volume slightly over 1 m 3 with a 15-cm-diameter warm bore. The principle diagnostic is a high-speed optical camera. The mercury jet is part of a closed mercury loop that includes an insert into the bore of the magnet

Recent progress in neutrino factory and muon collider research within the Muon collaboration

We describe the status of our effort to realize a first neutrino factory and the progress made in understanding the problems associated with the collection and cooling of muons towards that end. We summarize the physics that can be done with neutrino factories as well as with intense cold beams of muons. The physics potential of muon colliders is reviewed, both as Higgs Factories and compact high energy lepton colliders. The status and timescale of our research and development effort is reviewed as well as the latest designs in cooling channels including the promise of ring coolers in achieving longitudinal and transverse cooling simultaneously. We detail the efforts being made to mount an international cooling experiment to demonstrate the ionization cooling of muons