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The Paul Scherrer Institute (PSI) outlines plans for pion irradiation in 2014 through its pE1 beam line. This facility will provide an intense pion beam with approximately 10^9 p/s at a medium energy of ~280 MeV/c for various scientific applications including particle physics and material science. Due to high demand, beam time will be limited, with a deadline for proposals set for January 6, 2014. The study aims to gather important pion irradiation data to advance understanding of "pion damage" on new materials. Support from RD50 and collaboration with CERN is necessary for successful operation.
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Tilman Rohe Paul Scherrer Institut Plans for pion irradiation in 2014 PSI, PSI, 14. Oktober 2014
Facility • pE1 beam line at PSI • Secondary beam line in proton accelerator • Intense pion beam (a few 109p/s) • “Medium” energy (~280 MeV/c) • Beam line is used by • Particle physics: MuSan, AlCup, … • µSR (material science): Dolly • 2014 will be overboked • 2015 even worse (shorter beam period) • Possible access • “Test beam” • Informal, no written proposal, just ask • Low priority (no chance) • Scientific experiment • Written proposal (dead line 06.01.2014) • Presentation at the user’s meeting (27.-29.1.2014) • Beam time granted by committee • We are in direct competition with particle physics experiments pE1-beam line
Application Strategy • Strong scientific case • Stress the material science • Pion irradiation data is important to understand how to model “pion damage” with neutrons and protons for “new” materials • List papers (in reviewed journals) resulting from the last irradiation (2009?) • Please send me the references of all papers reporting on pion irradiated samples by 01.12.2013 • Stress that PSI profits from this activity • Visibility in the papers (at least in the acknowledgements)NB: In the past this did not work well. This does not strengthen our position! • Modest period • Only about 4 weeks (1 needed to prepare the beam line) • Limits to • ~100 samples • fluences of max 1015 pi/cm2 (~1 week in the focus) • Support • Irradiation must be run by RD50 • Human resources • PSI: beam adjustment, link to local groups (1 person) • CERN: irradiation table, spectrometer (2 persons, not the whole time) • RD50: • Preparation of samples • Running the irradiation (dosimetry, placing and removing the samples, book keeping) • At least 2 persons during the irradiation +/- 1 week