Beam Extinction Monitoring in the Mu2e Experiment

Eric Prebys, Larry Bartoszek, Andrei Gaponenko, Peter Kasper, Schaa, Volker R.W. (Ed.), Henderson, Stuart (Ed.), Akers, Evelyn (Ed.), Satogata, Todd (Ed.)
2015
The Mu2e Experiment at Fermilab will search for the conversion of a muon to an electron in the field of an atomic nucleus with unprecedented sensitivity. The experiment requires a beam consisting of proton bunches approximately 200ns FW long, separated by 1.7 microseconds, with no out-of-time protons at the 10⁻¹⁰ fractional level. The verification of this level of extinction is very challenging. The proposed technique uses a special purpose spectrometer which will observe particles scattered
more » ... ticles scattered from the production target of the experiment. The acceptance will be limited such that there will be no saturation effects from the in-time beam. The precise level and profile of the out-of-time beam can then be built up statistically, by integrating over many bunches.
doi:10.18429/jacow-ipac2015-mopwi017 fatcat:hueni2af2ng5lcmnkhiaozibvq