DHE Crate Design and Status

DES FE Workshop at FNAL December 14-15, 2005Vaidas Simaitis, University of Illinois at Urbana-Champaign

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DHE Crate Design and Status

• The mechanical design is ~95% completed.• ~5% = finalize mounting to telescope.• For the prototype, we are ignoring telescope

requirements for cooling water, temperature monitoring, and other instrumentation.

• Most prototype manufactured parts are out for quote.

• Most prototype purchased parts are on hand.


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6-SLOT + 4-SLOT Crate

Schroff Card Guides and Rails are on hand. 4-slot backplane is on hand, 6-slot on order

Chassis plate designs finished, drawings out for quote.


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HEAT EXCHANGERS & FANS

2 Fan Manifold and 2 Cooling Manifold drawings out for quote

2 fans on hand from early Monsoon design

1 heat exchanger on hand, 1 on back order


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MAIN MANIFOLDS

2 Main manifold drawings out for quote

Heat sink extrusion just arrived.

2 Thermo-electric coolers (TEC) not yet ordered.


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POWER SUPPLIES

2 Power Supply Mount drawings out for quote

2 Power Supplies to be ordered by Todd


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POWER SUPPLY MANIFOLDS

2 power supply manifold drawings out for quote

2 delrin crate mounting bars on hold until mounting design is done (not shown)


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PROTOTYPE ASSEMBLY

• Expect to receive chassis and manifolds by the end of January

• Assemble prototype, without heat shields• If assembly is OK, order heat shields• Order TEC’s, and TEC mounts• Test air flow and heating and cooling

through February• Install TEC’s and heat shields


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THERMOELECTRIC MOUNT

DELRIN INSULATOR / SPACER

TEC

HEAT SHIELD WILL ATTACH TO COPPER PLATE


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View with HEAT SHIELDS


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CRATE Installed on Cylinder


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MOUNTING PIVOTS

NORMAL LOCKED POSITION

EXTENDED POSITION

PIVOT

LOCK


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Why PIVOTS ?

• Allow some FLEXIBILITY to avoid possible obstructions, for extraction or insertion of front modules or transition cards.

• PIVOTS allow either end to be angled out, and are locked in position for SAFE access.

• Little extra $$ for a lot of SAFETY!

• Final design is on hold until mounting method and position is OK’ed by FNAL


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Z-AXIS VIEW WITH R=52” ID


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WORST-CASE MODULE ACCESS


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CRATE PIVOTED FOR ACCESS


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DESIGN DETAILS

• Our design resides in much detail at our UIUC website at CLICK HERE or copy and paste:

• web.hep.uiuc.edu/Engin/DES/DHE_10_Crate/DHE_10_Crate.html

• The best way to see the design is to download the free DWF Viewer.

• You can then rotate, zoom in/out, hide parts in assemblies so you can see the insides, and print any view you like.

• Else, you’re stuck with the 2D PDF views.

http://web.hep.uiuc.edu/Engin/DES/DHE_10_Crate/DHE_10_Crate.html

Documents

DHE Crate Design and Status