1. Cryo Capture Cavity II Progress Mike McGee April 13, 2005

2. Status at Fermilab Ordering stainless steel materials for transitions, spool and fixture Designing helium return pipe reducer and flanged connection Modifying helium vessel clamp design to accommodate type III helium vessel Designing shipping/installation fixture Preparing overall assembly procedure for Cryo Capture Cavity II during various stages Preparing for dry fit of assembly into vacuum vessel

3. Comparison of helium vessels Providing clearance for helium vessel tabs (4) Providing clearance for return pipe feed from helium vessel

4. Modified helium vessel clamp Modification areas are shown in red (note return pipe is actually rotated –45 degrees)

5. Openings for helium vessel clamps 4 openings in magnetic shielding per helium vessel clamp Will provide DESY with shielding drawing of opening placement by Thursday

6. Magnetic shield opening detail 4 screw cut-outs and 4 pad cut-outs

7. Modify 80K shield Horizontal orientation for both valves Cut holes in 80K shield

8. Modify VAT valve Machine off hex head and cut square (for use with ratchet extension) on VAT valve spindles

9. Existing Tuner Stepper motor interferes with bottom of US VAT valve Use of mirrored DESY tuner

10. Dry fit at Fermilab Assemble transitions and pseudo VAT valve spools with existing cavity on installation fixture

11. Dry fit at Fermilab Insert assembly into vacuum vessel off horizontal axis

12. Dry fit at Fermilab

13. Low radial profile end flange design

14. Assembly for DESY Send to DESY (May 2005) Cleaned US and DS warm-to-cold transitions and spool Under argon positive pressure valve w/filter blank flange

15. Assembly for DESY with fixture Assembly sent to DESY in crate with shipping fixture

16. VAT valve support

17. Assembly shipped from DESY Assembly Cavity and helium vessel Spool between VAT valve and cavity Mirrored tuner Magnetic shield Input coupler US & DS Warm-to-cold transitions and spool

18. Install cavity assembly into vacuum vessel Use of monorail with end supports Insert off horizontal axis

19. DS warm-to-cold transition

20. US warm-to-cold transition

21. Shipping fixture baseline vibration study en-route from DESY We need baseline information of overseas shipping for Capture Cavity II and other devices Media Recovery “Shock-Log” Provides acceleration measure in x, y and z Custom software provided is Windows compatible for use with laptop

22. Shock-Log Use Also features a “wake-up threshold if a specified acceleration is exceeded Cost of device with software $2,400 Features ability to optimize sample rate based on trip duration Checking on acceptance by US Customs and Homeland Security US Customs, Air Carriers and Homeland Security are more likely to allowable a commercial device rather than one homemade

23. Schedule