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The E951 Targetry Program

Explore alternatives for high-power proton targetry in the E951 program at CERN, considering thermal management, radiation damage, and high peak power requirements.

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The E951 Targetry Program

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  1. The E951 Targetry Program Targetry Meeting CERN September 19, 2003

  2. Interest in High-power Proton Drivers • High average power—SNS • Thermal management • Radiation damage • High peak power—NLC, Superbeams, NUFACT • Thermal management • Radiation damage • Thermal shock

  3. Superbeams • Carbon is a good target candidate • Higher momentum pions • Stationary target up to 1.5 MW • Good thermal properties • Low energy deposition densities 28 GeV Proton Beam

  4. Neutrino Factory • Maximize Pion/Muon Production • Soft Pion Production • Higher Z material • High energy deposition • Prone to target dissipation • High Magnetic Field

  5. High-Z Materials • Key Properties • Maximal soft-pion production • High pion absorption • High peak energy deposition • Potential for extension beyond 4 MW (liquids) • Key Issues • Jet dynamics in a high-field solenoid • Target disruption • Achievement of near-laminar flow for a 20 m/s jet

  6. E951 Hg Jet Tests • 1cm Diameter Hg Jet • 24 GeV 4 TP Proton Beam • No Magnetic Field

  7. CERN/Grenoble Hg Jet Tests • 4 mm Diameter Hg Jet • v = 12 m/s • 0, 10, 20T Magnetic Field • No Proton Beam A. Fabich, J. Lettry Nufact’02

  8. High Field Pulsed Solenoid • 70o K Operation • 15 T with 4.5 MW Pulsed Power • 20 cm warm bore • 1 m long beam pipe Peter Titus, MIT

  9. Pulsed Solenoid Performance • 5T Peak Field with 2 inner coils; 540 KVA ; 80O K • 10T Peak Field with 2 inner coils; 2.2 MVA PS; 72O K • 15T Peak Field with 3 coils; 2.2 MVA PS; 30O K • 15T Peak Field with 3 coils; 4.4 MVA PS; 70O K

  10. Cryogenic Performance LN2 Pool Boiling LN2 Forced Flow

  11. Battery Power Supply R&D Battery/Charger 12V 1400A Mech. Switch 1500V 1600 A Load Mechanical Switch capable of 4.4 MW Pulsed System IGCT 600V 4000A

  12. Future E951 Running • We plan to resume E951 running at the AGS. • But DOE HEP support has been terminated for FY03 and will likely remain so for FY04 and FY05. • We need to explore • alternatives.

  13. Alternative Running • Alternatives for targetry running:

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