cedar support structure and pmt test
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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CEDAR Support Structure and PMT Test
Peter SutcliffeBirmingham1st Sept 2011
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Proposed CEDAR Concept Design
Existing PMT Head
Insulation (all yellow parts)
New Detector Support
Detector Frame
Cooling and Electronics
Light Guide
Mirror
N2 Environmental Casing
Shortened Dimension 843mm
PMTs
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Latest Version...Mainly Prototype
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General View of Mirrors
New Alum split support tube surrounds existing PMT Head
Mirror fixed to the support tube
Some Adjustment needed at prototype stage
Edmund Optics Lens R45-371Dia 75mm, FL 200mm, Rad 103.36mm4 on orderTo be Al coated at CERN
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General Section
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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
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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.
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Detail of PMT holder Aluminium short tube PMT holder and 37°
polished cone ‘Top Hat’ to house PMT Electronics
arrangement..TBD.
Quartz window Holder (existing)
New PMT Tube (Brass)
New PMT Holder
New PMT Holder(insulator)
PMT
Lock Nut
PMT Locking Plate
PMT
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Exploded View