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Hanohano Engineering

Hanohano Engineering. Joe Van Ryzin Makai Ocean Engineering, Inc. DOANOW Honolulu, Hawaii March 23-25, 2007. An Apology…. Hanohano Engineering. Work Proposed to CEROS.

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Hanohano Engineering

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  1. Hanohano Engineering Joe Van RyzinMakai Ocean Engineering, Inc. DOANOWHonolulu, HawaiiMarch 23-25, 2007 Makai Ocean Engineering, Inc.

  2. An Apology… Hanohano Engineering Makai Ocean Engineering, Inc.

  3. Work Proposed to CEROS • Determine feasibility and methodology of detecting low-energy anti-neutrinos from radioactive decay by detectors in the very deep ocean. • Perform engineering studies and component tests to minimize the risks and unknowns associated with such a detector. • Provide a conceptual design and costs. Makai Ocean Engineering, Inc.

  4. Scope of proposed/completed work • Size and sensitivity analysis • Design of basic structure • Successive implosions • Electronics • design for low power • Internal electronics design • Power and communications links • Deployment analysis and simulation • Test Scintillation materials at depth and temp • Conceptual design and pricing Makai Ocean Engineering, Inc.

  5. Hanohano structure • Strict material requirements • Deep ocean, extreme pressures • Implosion of instrument housings • Deployment and recovery • Ease of maintenance & repair • Ease of testing and instrumenting • Practical Design • Simple constructible structure • Stable, safe Makai Ocean Engineering, Inc.

  6. Pressure Issues: Implosion Typical form of an implosion shockwave – derived from experimentation (Orr and Schoenberg, 1976) Makai Ocean Engineering, Inc.

  7. Post CEROS work; 50 kT detector • Total mass: 102 kT • 49% Scintillator: 50 kT; 36m dia x 57m high • 12% Oil: 1 m layer • 20% fresh water: 2 m layer • 8% steel • 6% ballast • 5% droppable anchor Makai Ocean Engineering, Inc.

  8. Deployment: • 1950’s technology: Makai Ocean Engineering, Inc.

  9. Bathyscaphe Challenge • Heavy enough to submerge on surface with drop weight. • Compress during descent. Compresses 2800m3 • Cools on bottom, 1500m3 • Ambient seawater also more dense: • Drop 2800 Tonne anchor; 0.3% buoyancy • 27 minute fast descent and ascent. Makai Ocean Engineering, Inc.

  10. 50 kT • Could even be larger; cost is the major limit • Practical limits are ports and passages; supertankers are ~5x larger. • Easily transportable to any ocean, fits in Suez Canal, not in Panama • Construction: shipyard standards, economical • Separate support and hotel from detector functions • Possible: multiple detectors for one support vessel • Deployment and recovery from great depth is relatively easy – bathyscaphe Makai Ocean Engineering, Inc.

  11. More to come (hopefully)…. Makai Ocean Engineering, Inc.

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