Transcript NA62 Concept Design

NA62 Concept Design
P. Sutcliffe
Liverpool University
CEDAR Concept
Test Box
• Insulated box 42cm x
40cm x 32cm high x
3.5cm wall
• Used to test the cooling
of the PCBs and ambient
temperature rise.
• Compare with FE results.
Cooling Arrangement
• PCB fan with heat sink
used to cool a copper
cooling block
• Copper heat sink
screwed to cooling
block with 4 BPC5
Resistors producing
5W heat each.
• Testing at Liverpool in
the past shows we can
load them up much
higher.
FE Analysis using ANSYS
Copper Heat Sink
K=386 W/m.K
Copper Cooling Block
K=386 W/m.K
Applied cooling to this
face 20ºC
Thermal Grease
K=2 W/m.K
Alumina Resistor @ 5W
K=24 W/m.K
Resistor Glue
K=1 W/m.K
ANSYS Results
Mean Chip Temp
26ºC
Space Frame Design
• Standard 20mm
Bosch Profile.
• Easy Assembly
• Cheap
Sector Prototype
Light Guide Ideas..
• Made from
Aluminium or
Stainless Steel
• Prototype
manufactured using
the Wire Eroder at
Liverpool
• Chemically polished
Electronics and Cooling
N2 in
Water in
Water out
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Water cooling at
around +20°C
N2 temperature
controlled with
cooling block
attached to water
cooling block
Cooling and N2
to be manifolded
around all 8
modules.
Swagelok fittings
to be used
N2 Out
Carbon Fibre at Liverpool
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Carbon Fibre Workshop
run by Peter Cooke
Mould manufacture
Honeycomb and Rohacell
core experience
Woven Cloth and UD high
modulus materials
LHCb VELO Pedestal
ATLAS Upgrade
CF/Honeycomb cooled stave
Carbon Fibre Box
• Carbon Fibre Box
Proposal
– Carbon Skins
– Nomex or Rohacell
core
– Total wall thickness
10mm
Further Work…
• Work towards a fully functioning prototype
• Look into production techniques of light
guides…wire eroding and chemical
polishing
• FE Analysis of Cooling
• Carbon box prototype manufacture