1. Cryomodule prototype Yun He, Dan Sabol, Joe Conway On behalf of Matthias Liepe, Eric Smith, James Sears, Peter Quigley, Tim O’Connell, Ralf Eichhorn, Georg Hoffstaetter

2. Prototype cryomodule 2 Differences of Prototype Module from Linac Module Flange-to-flange: 10.4 m Prototype moduleLinac module Cryogenic feedingFront cryo-feed can Side cryo-feed module Cryogenic pipingWith flange/elbow pre-welded Straight Welded in-situ End capYesIntermodule Connection between HGRP & 2k-2 phaseMiddle & endMiddle SC magnets/BPMsNoYes Beamline warm-cold transitionYesOn end modules Wire position monitorYesNo Cryo-feed canEnd cap Yun HE, MLC External Review10/3/2012

3. 3 Cryo-feed can Cryo feed head from heat exchanger, to feed cryogen to module Yun HE, MLC External Review10/3/2012 HGRP and six lines – 1.8K -- 5K (supply, return) -- 40-80K (delivery, supply, return) Two lines to be blanked off Shield end section mounted to main shield End plates in two halves

4. 10/3/2012Yun HE, MLC External Review4 Cooling pipes Flanges/elbows to connect to cryo-feed head are pre-welded

5. 5 End cap Piping blanked off HGRP 5K (supply & return) 1.8 K 40 K return 40K delivery & supply lines connected by ½” tubing Yun HE, MLC External Review10/3/2012 Port for access to tuner/GV Manual gate valve to be supported with G10 to HGRP, w/ key alignment 40K shield curved inwards Manual gate valve intercepted @80K

6. 6  For prototype, a second connection between HGRP and 2K-2 phase at far end provides cooling of the second half section of HGRP  A bellows section at very end on 2K-2 phase  This applies to the last cryomodule in the linac string Cooling of 2 nd half of HGRP for prototype module Yun HE, MLC External Review10/3/2012 Pipe support

7. Bellows section connects beampipe to end flange of can allows for displacements of beamline at cold Vertical: 1.2 mm Longitudinal: 8 mm 7 Beamline warm-cold transitions Gate valves intercepted @80K Replacement of SC magnets Yun HE, MLC External Review10/3/2012  Warm-cold transitions, wall 1.65mm  Will have sliding joints on beamline outside module to accommodate beamline shifts at cold

8. Heat treated CuBe wire ( ɸ 0.5 mm) is stretched parallel to the beam axis providing a position reference  For prototype module only, to monitor relative displacement between the wire and cold mass Mounted on end cap flanges (room temperature), thus the wire position is not influenced by cool-down A WPM sensor consists of four striplines spaced 90° apart 8 Wire position monitor Sensors attached to end flange of cavity LHe vessel Two sensors for 1 st, 3 rd, 5 th cavities to monitor pitch displacements One sensor for each of the rest three cavities Yun HE, MLC External Review10/3/2012