25-31 August 2019
The Grand Hotel Daegu
Asia/Seoul timezone

Design and development of a tungsten pion production target for the Mu2e experiment

Aug 29, 2019, 5:15 PM
25m
Regency Hall (LL/B1F) (The Grand Hotel Daegu)

Regency Hall (LL/B1F)

The Grand Hotel Daegu

Oral Presentation Working Group 3+4

Speaker

Dr Christopher Densham (Christopher)

Description

The Mu2e experiment at Fermilab will search for the neutrino-less conversion of a muon to an electron in the field of a nucleus. Negative muons will be produced from the decay of pions generated by the interaction of an 8 GeV proton beam with a tungsten target. The target will be installed in the bore of a production solenoid within a graded magnetic field so as to maximise the production and capture of low energy negative pions. Pion production is maximised in a dense and compact target material with a high atomic number. For a beam power of 8 kW the refractory metal tungsten is the most suitable material that is able in principle to directly radiate the 560 W heat load to the solenoid shield without the need for a coolant. However, the dimensions that optimise pion production are similar to those of a pencil, and the high operating temperature presents many engineering challenges that need to be overcome for a target to have the required lifetime, combined with significant radiological safety issues. This talk will present the development of the design and some innovative materials testing that has resulted in a potential compromise solution with a realistic chance of a 1-year lifetime.

Working Group WG3 : Accelerator Physics

Primary author

Dr Christopher Densham (Christopher)

Co-authors

Dr Tristan Davenne (STFC Rutherford Appleton Laboratory, UK) Mr Joe O'Dell (STFC Rutherford Appleton Laboratory, UK) Mr Peter Loveridge (STFC Rutherford Appleton Laboratory, UK) Dr Steve Werkema (Fermi National Accelerator Laboratory, Batavia, USA) Dr Kevin Lynch (York College at CUNY, New York, USA) Prof. James Popp (York College at CUNY, New York, USA) Dr Robert Bernstein (Fermi National Accelerator Laboratory, Batavia, USA) Dr Vitaly Pronskikh (Fermi National Accelerator Laboratory, Batavia, USA) Mr Larry Bartoszek (Bartoszek Engineering, Aurora, IL, USA) Patrick Hurh Mr David Pushka (Fermi National Accelerator Laboratory, Batavia, US) Mr Geoff Burton (STFC Rutherford Appleton Laboratory, UK) Mr Nathan O'Donoghue (STFC Rutherford Appleton Laboratory, UK) Mr Eric Harvey-Fishenden (STFC Rutherford Appleton Laboratory, UK)

Presentation materials