1. R. Rucinski, Fermilab Feb. 9, 2005 Project Status 2 cassette VLPC Cryostat Russ Rucinski - Fermilab This presentation will probably involve audience discussion, which will create action items. Use PowerPoint to keep track of these action items during your presentation In Slide Show, click on the right mouse button Select “Meeting Minder” Select the “Action Items” tab Type in action items as they come up Click OK to dismiss this box This will automatically create an Action Item slide at the end of your presentation with your points entered.

2. R. Rucinski, Fermilab Feb. 9, 2005 Preliminary fit up - good

3. R. Rucinski, Fermilab Feb. 9, 2005 Preliminary fit up - good

4. R. Rucinski, Fermilab Feb. 9, 2005 Status Summary Real assembly should start this week. Many miscellaneous parts ordered and most here. (o-rings, bolts, cryo grease, fittings, copper strips) Compressor for Cryo cooler wired up. Extending control cables. Run Cryo cooler only – week of 2/21? Cool cassettes – week of 2/28 or later? Ship in March

5. R. Rucinski, Fermilab Feb. 9, 2005 Pictures – Thermal links Thermal link fabrication problems have a solution – Copper here. Solder on order. Delivered parts cleaned up for re-use. –Using 30 sheets of 0.005” thick copper at each link. –Polyimide (Kapton) 0.003” as solder mask –Calculate Temp drop 1.0 K at 65 K, & 0.1 K at 8 K station –Calculate 20 lbf, 90 Newtons force to flex

6. R. Rucinski, Fermilab Feb. 9, 2005 Pictures – Assembly stand

7. R. Rucinski, Fermilab Feb. 9, 2005 Pictures Invar Envelopes: Dimensional dummy Inserted in RHS Stiffener parts Compressor Wired up

8. R. Rucinski, Fermilab Feb. 9, 2005 Areas of possible concern Control system details –Sensors, controllers, heater, feed thru’s Safety Documents & approval –“Pressure vessel” is special –Need to size & obtain relief valves Thermal link fabrication unknowns Temperature & pressure stability –small gas volume –part of commissioning/test

9. R. Rucinski, Fermilab Feb. 9, 2005 Schedule details