Cryo Capture Cavity II Progress Mike McGee April 13, 2005

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

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

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

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

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

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

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

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

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

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

Dry fit at Fermilab

Low radial profile end flange design

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

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

VAT valve support

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

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

DS warm-to-cold transition

US warm-to-cold transition

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

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

Schedule