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HiRadMat Muon Dump

HiRadMat Muon Dump. Layout-1. Layout-2. Muon dump Beam dump, downstream of experiments/targets, Designed to absorb primary beam (when no target ) Active cooling & special core . Heat deposition. (depends on heat deposition, beam size and cooling used) Per pulse Up to 2.4 MJ

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HiRadMat Muon Dump

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  1. HiRadMatMuon Dump

  2. Layout-1

  3. Layout-2 Muon dump • Beam dump, downstream of experiments/targets, • Designed to absorb primary beam (when no target ) • Active cooling & special core

  4. Heat deposition (depends on heat deposition, beam size and cooling used) • Per pulse • Up to 2.4 MJ • Materials • Core of graphite ~0.6x0.6x1.3m3(unless temperature too high) • Core in “box” (integrity) or under inert gas (oxidation) – or not? • Cast iron shielding (recuperate from T9 and T1) • Location: • Integrated in T9 shielding castle (remove T9 core, use and complete existing shielding with blocks from T1) • More downstream (larger & more diffused beam) • “Diffuser” at T9 and muon dump further down

  5. Different options (depends on heat deposition, beam size and cooling used) • Cooling: • Air or water-cooling? • On outside walls (shielding) or on core? • Materials • Core of graphite ~0.6x0.6x1.3m3(unless temperature too high) • Core in “box” (integrity) or under inert gas (oxidation) – or not? • Cast iron shielding (recuperate from T9 and T1) • Location: • Integrated in T9 shielding castle (remove T9 core, use and complete existing shielding with blocks from T1) • More downstream (larger & more diffused beam) • “Diffuser” at T9 and muon dump further down

  6. For comparison: CNGS Hadron Stop • Designed to absorb 100kW • Graphite core (2.4x2.8x3.2m3) • Water cooling around core (Stainless Steel piping in Aluminium cast blocks) • Cast iron bulk (4x4x17m3)

  7. Hiradmatvs CNGS Hadron Stop • Beam size & impact frequency: • Hadron stop: beam size is ~1m (1km after target and designed for secondary beam only) and ~0.3Hz • Hiradmat: beam size is ~1mm (primary beam) and ~kHz  Impact & fatigue effect is higher, graphite might not resist (pitting, losing integrity) • Average beam heat deposition: • Hadron Stop: 50kW (secondary, ultimate beam) • Hiradmat: many different cases, but worst case? • Maximum pulse energy: • Hadron Stop: low, only secondary beam (~kJ?) • Hiradmat: 2.4MJ!

  8. Next steps • Define beam structure load cases • Define worst case scenario for immediate and average heat deposition • Obtain heat depositions (Fluka) • Thermal & shock FE-calculations • Survey available shielding (from T1 and T9)

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