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How to get by without LIQUID ARGON Rajendran Raja & William Wester Fermilab , Apr,2012

How to get by without LIQUID ARGON Rajendran Raja & William Wester Fermilab , Apr,2012. Assume that Liquid Argon at 5 kiloton is a given. How do we expand beyond this? This 10-15 mins minute talk, explains a possible way. Lots of R&D is needed to make this a reality (or not). beam

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How to get by without LIQUID ARGON Rajendran Raja & William Wester Fermilab , Apr,2012

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  1. How to get by without LIQUID ARGONRajendran Raja & William WesterFermilab, Apr,2012 • Assume that Liquid Argon at 5 kiloton is a given. • How do we expand beyond this? This 10-15 mins minute talk, explains a possible way. • Lots of R&D is needed to make this a reality (or not). LBNE presentation

  2. beam Fermilab FN 0812 E, R.Raja, 2007 LBNE presentation

  3. Equipotential lines LBNE presentation

  4. Picture taken from “Toward a Muon collider detector with manageable backgrounds” 0.4 cm iron+ silicon readout. 100 GeV Singleelectron track for 4 layers= 1 radiation length. LBNE presentation

  5. Jimmy Walker idea of float glass. LBNE presentation

  6. TPC with glass • Each plate can be 3.5meters x 3.5 meters height x width. • Each TPC plate can be 3 cm long. 4 plates will be 1 radiation length. 1 cm long drift volume. Density 1.7 gm/cc • You can think of 1.5 cm long TPC plates and 0.5 cm drift volume. Then the number of plates will be 8 for 1 radiation length. Density the same. • You may need a magnetic field parallel to the drift which can be thought of as a good thing or a bad thingif a bad thing, one can conceive of a drift in alternate directions one way and then the other so that every other plate drifts one way. This means that the biases due to drift distance vs distance in x can be overcome. • Both the proton decay modes (e p0 as well as m Ks ) can be visible though not as well as liquid argon. • Supernovae can be seen since the earth rotates, though not as well as liquid argon. • Readout using TGEM (thick gems) looks attractive. LBNE presentation

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