DPA and Gas Production from Protons on W and Be Brian Hartsell.

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Presentation transcript:

DPA and Gas Production from Protons on W and Be Brian Hartsell

DPA and Gas Production in Tungsten Ran the Mu2e target in MARS15 using the following parameters: – 8 GeV protons on Tungsten target – Gaussian distribution with 1mm X and Y sigma – 6mm diameter, 160mm length target – 3 bins/sigma radially, 1cm bins axially

Results Peak DPA: – 1.4e-18 DPA/p Gas production: – H:60 appm/DPA – He:20 appm/DPA

Converted to yearly.. 1.9e20 p/yr estimated Peak DPA: – 260 DPA/yr Gas production: – H:16000 appm/yr – He:5300 appm/yr

DPA and Gas Production in Beryllium Ran an arbitrary case in MARS15: – Varying energy protons on Beryllium target 2 MeV, 250 MeV, 120 GeV – Gaussian distribution with 0.3mm X and Y sigma – 2.1mm diameter (7 sigma), 10mm length target – 1 bin/sigma radially, 1cm bins axially

Results Values are shown averaged over a volume of: – 1 sigma diameter – 1cm depth for 120 GeV and 250 MeV, depth shown for 2 MeV

Results scaled to LBNE style beam 700kW case: – 1.3mm beam sigmas – 3.7E13 protons/sec – 100% uptime

Acknowledgements Many thanks to Nikolai Mokhov for his input and support for the MARS runs.