1. Spoke section of the ESS linac: - Status of prototypes and CDS-SL
P. DUTHIL (CNRS-IN2P3 IPN Orsay / Division Accélérateurs)
on behalf of the IPNO team

2. Prototype cryomodule and valve box
Last ESS bi-weekly meeting: May 30th 2017  progress status from this meeting
Tests at IPNO:
Goal: RF and cryogenic tests of {1 Spoke cavity (Giulietta) + 1 mock-up cavity}
 the cryomodule was entirely disassembled to change from the {2 mock cavities} configuration to the {1 Spoke cavity + 1 mock-up cavity} one.
June:
Test Valve box:
. ready for cryo tests (repaired, leak tested and set in the Supratech experimental platform)
. design of the transport to Uppsala: to design the transportation frames of the prototype cryomodule and valve box, mechanical analysis of the prototype valve box were carried out: eigen modes of the test valve box were estimated; allowable accelerations wrt to the elastic-damping transport frame were evaluated.
Cryomodule:
. Assembly of the cryomodule under progress (all components repaired) ;
. Repaired VLP branch line of the cryogenic jumper of the cryomodule repaired by the manufacturer and delivered on June 14th; integration of this line by IPNO started
Helium infrastructures:
. Were not (fully) available due to supervision defects
 valve box cryo tests postponed to July

3. Prototype cryomodule and valve box
Tests at IPNO:
Goal: RF and cryogenic tests of {1 Spoke cavity (Giulietta) + 1 mock-up cavity}
 the cryomodule was entirely disassembled to change from the {2 mock cavities} configuration to the {1 Spoke cavity + 1 mock-up cavity} one.
July:
Test Valve box:
. cryogenic tests performed = cool-down and 4 K mode:
C&C tested (PLC controls such as regulation loops, etc.) + cryofluids consumption
 good results i.e. the valve box was operated and works as expected;
 preliminary test report sent to ESS.
Cryomodule:
. cryomodule assembled and leak tested;
. cryomodule installed in the Supratech experimental platform;
. repaired VLP line of the cryogenic jumper prevented the cryomodule from its connection to the valve box (VLP too long…)
Helium infrastructures:
. Supervision temporally repaired (new server and OS environment needed)

4. Prototype cryomodule and valve box
Tests at IPNO:
Goal: RF and cryogenic tests of {1 Spoke cavity (Giulietta) + 1 mock-up cavity}
 the cryomodule was entirely disassembled to change from the {2 mock cavities} configuration to the {1 Spoke cavity + 1 mock-up cavity} one.
August:
Test Valve box: standby (waiting for the cryomodule)
Cryomodule:
. VLP line of the cryogenic jumper shortened;
. cryomodule connected to the valve box;
. He leak tests of this connection (multichannel cryogenic line) are carried out
 if no leak detected: cryomodule and valve box ready for the cryo and RF tests
 tests to be performed in September.
Helium infrastructures:
. New server and OS environment being installed
. Re-qualification of the He high pressure storage (Pressure Equipment Directive): storage sectors will be successively removed from service for this qualification
 He storage capacity will be diminished this autumn
(ESS experiments should not be affected as ESS is the priority);
 infras momentary shutdown will be performed;
(ESS experiments might be affected)

5. CDS-SL
Schedule:
Following the CDR (end of April) a new detailed schedule was sent to ESS on July 5th (to be discussed)
Design
Design is still under progress
Procurements
Control (cryogenic) valves:
Contact notified on July 19th
kick-off meeting on July 20th
Heat exchangers:
Contract notified on July 12th
kick-off meeting on July 21st
Valve boxes:
Administrative work began (see news from the CNRS procurement department)
The date for the publication of the call for tender is targeted to be end of Sept. 2017

6. CDS-SL SCHEDULE Guidelines:
Procurements are divided into several calls for tenders:
priory the components which are on the critical path (do not wait for the finalization of the other components)
save time on the administrative aspects of the calls for tenders:
(smaller budget  simpler procedure  less administrative time)
 expect to save time (or not to loose)
 more human resources involved (calls for tender and manufacturing follow-up)
Valve boxes (critical path) production is organized such that:
a 1st series valve box is produced and tested
at the manufacturer premises (control and tests + LN2 cool-down) = FAT
at IPNO: LHe tests
then the 12 series valve boxes are produced
 organization of the series (mass) production during the production of the first valve box:
. human resources (team completion) (manufacturers feedback;
. materials procurements;
 check the manufacturing (and design) with the complete test of the first valve box
Some milestones:
Valve boxes (critical path)
Call for tender publication: end of September 2017
Procurement notification : beginning of 2018
1st valve box FAT: end of October 2018
1st valve box delivered to ESS: end of November 2018
Last valve box delivered to ESS: August 2019
CDS-SL installed and tested: beginning October 2019

7. Thank you for your attention
CSP12
28 Novembre 2014
Thank you for your attention