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CEDAR Support Structure and PMT Test

CEDAR Support Structure and PMT Test. Peter Sutcliffe Birmingham 1 st Sept 2011. Proposed CEDAR Concept Design. N2 Environmental Casing. Cooling and Electronics. Insulation (all yellow parts). PMTs. Light Guide. Mirror. Existing PMT Head. Detector Frame. Shortened Dimension

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CEDAR Support Structure and PMT Test

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  1. CEDAR Support Structure and PMT Test Peter Sutcliffe Birmingham 1st Sept 2011

  2. Proposed CEDAR Concept Design N2 Environmental Casing Cooling and Electronics Insulation (all yellow parts) PMTs Light Guide Mirror Existing PMT Head Detector Frame Shortened Dimension 843mm New Detector Support

  3. Latest Version...Mainly Prototype

  4. General View of Mirrors Edmund Optics Lens R45-371 Dia 75mm, FL 200mm, Rad 103.36mm 4 on order To be Al coated at CERN • New Alum split support tube surrounds existing PMT Head • Mirror fixed to the support tube • Some Adjustment needed at prototype stage

  5. General Section

  6. Light GuideNew 8 X 4 Array • Light Guide made of Aluminium and to be wire eroded at Liverpool. • Complicated process of manufacture, but planning is well under way. • Test pieces of cone have been made. • Burnishing tool is on order, delivery this month. • Test pieces in new materials to be assessed: • Copper with Chrome Plating • Stainless steel to be burnished

  7. PMT Test at CERN October • Aluminium short tube which will screw directly onto existing Quartz window holder and fixed into one of the 8 existing PMT positions.

  8. Detail of PMT holder • Aluminium short tube • PMT holder and 37° polished cone • ‘Top Hat’ to house PMT • Electronics arrangement..TBD. New PMT Tube (Brass) Lock Nut New PMT Holder New PMT Holder (insulator) PMT PMT PMT Locking Plate Quartz window Holder (existing)

  9. Exploded View

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