Crab cavities SPS test Giovanna Vandoni CERN logo

Crab cavities SPS test Giovanna Vandoni CERN logo area #2 CERN SRF Workshop– 2 nd December 2016

Contents of the presentation I will sketch the frame of the SPS crab cavity tests programme, in terms of scope, time and budget, pointing to the presentations by Carlo and Alick for the cryomodule development and assembly and tests in SM 18. I will then focus on the SPS test stand preparation & installation logo area G. Vandoni, BE/RF 2

The SPS test programme logo area G. Vandoni, BE/RF 3

Crab-cavities for increased luminosity Crab-cavities never tested in hadron beam Prerequisite for series production and installation in LHC is the validation of feasibility of safe operation with proton beams SPS Test-scope DQW logo area 2 prototype cryomodules, DQW and RFD Emittance growth Cavity behaviour and “transparency” Operational aspects, LLRF, Machine protection RFD • • G. Vandoni, BE/RF 4

SPS Tests Program – Master Schedule EN-MME Cavity #1 pieces produced 03/10/16 BE-RF/SRF EN-ACE Cavity #2 Cavity #1 Cavity #2 pieces ready produced 22/12/16 02/02/17 28/10/16 logo area TE-CRG BE-RF TE-VSC String assembled 27/07/17 Missing 12 days CM assembled 06/12/17 Target CM commission ed In SPS 23/02/18 G. Vandoni, BE/RF 5

Work progress – Cryomodule § Technical CM Coordination, bi-weekly § System Integration Workflow : location, team, duration, tools, tests § Reviews of specific activities (clean room) and items (FPC, tuner) § Procurement of Vessel for Cryomodule launched – on track § Production of cavities and auxiliaries – on track See C. Zanoni’t talk System Integration Workflow : https: //edms. cern. ch/document/1703245/9 Crab Cavity Technical Coordination: https: //indico. cern. ch/category/8048/ logo area G. Vandoni, BE/RF 6

Work progress – SM 18 activities Clean rooms ISO 4 & ISO 5 HP rinsing cabinet & preparation zone Cavity preparation & treatment assembly testing See A. Macpherson’s talk High. Press. Rinsing facility upgrade Operational Clean room tools & procedures Review acknowledged the coherent plan and clear methodology. It advised reinforced coordination, organisational plan, identify additional resources, bottom-up methods via training & tests on mock-ups. Vertical cryostats for single cavity test 1 insert operational, 1 insert in assembly LLRF & Controls In progress, development & test on Po. P cavity Nov 16 Infrastructure in M 7 In progress: new cabling & vacuum equipment Cryo distribution logo area IT DO-30148 purchase procedure launched 13 Oct 16 G. Vandoni, BE/RF 7

logo area Intermediate Valve box M 7 bunker cryo SM 18 – RF testing bunker RF ampli II G. Vandoni, HL-LHC C&S Review #2, Oct 2016 8

The SPS test STAND logo area G. Vandoni, BE/RF 9

BA 6 – surface area System architecture in SPS point 6 RF power amplifiers IOT Cryogenic compressor LLRF Faraday cage Racks, utilities ~40 m PA 6 - shaft RF power coaxials Warm Cryo pipework Cryo distribution line Crab-cavity test stand ~110 m TA 6 - alcove Cold-box Valve-box New handling equipment logo area G. Vandoni, BE/RF 10

HL-LHC CC SPS test stand in 2016 QDA. 61710 logo area G. Vandoni, BE/RF 11

HL-LHC CC SPS test stand in 2018 QDA. 61710 logo area G. Vandoni, BE/RF 12

HL-LHC CC SPS test stand layout Helium pumps Valve-box 2 Service module RF power, loads & circulators Beam vacuum sectorization valve BPM Transfer table Translation in-beam and outof-beam by 510 mm logo area Beam vacuum sectorization valve BPM Cryomodule BLM Trans port l ane Y-chamber G. Vandoni, BE/RF 13

Compatibility of CCCM with SPS Operation CCCM aperture CCCM after QDA. 617 CCCM LHC beam extraction in LSS 6 Fast extraction to LHC Not enough aperture for extracted beam at nominal location close to QDA. 617 Slow extraction of fixed target beam at 400 Ge. V, incl. extraction bump purple : raw beam envelope red: beam envelope + tolerance H. Bartosik @ Crab cavity at QD 617 is compatible with slow extraction to North Area SPS Test Day, I https: //indico. cern. ch/event/463435/ logo area G. Vandoni, BE/RF 14

SPS – Machine protection PARKING POSITION The motorized transfer table supports the CCCM and proximity ancillaries Table movement is interlocked by Access VETO in SPS and by Valves closed 510 mm IN-BEAM POSITION Mitigation of the risk of cryogenic hazard Table movement interlocks beam by sector valve closure Table position interlocks beam and extraction logo area SPS-ring BIS and EXTR 1 BIS G. Vandoni 15

Cryogenics architecture VB 2 Compressor at the surface Cold-box underground Cryogenic distribution line VB 1 Thermal compensation boxes Cold box Going underground with refrigeration implies horizontal cryogen transfer, cold-box in technical alcove, venting of safety devices to surface Courtesy S. Claudet logo area G. Vandoni, BE/RF 16

SPS test stand resources: plan. cern. ch Activity 10843 - HL-LHC Crab-cavity cryomodule in SPS 26 CERN teams 82 CERN staff contacts logo area G. Vandoni, BE/RF 17

SPS Installation Master plan logo area G. Vandoni, BE/RF 18

Overall EYETS SPS coordination D. Mcfarlane A. Berjillos EN/ACE EYETS – a beehive Field coordination J. Dalla-Costa SPS/OP Safety coordination G. Vandoni BE/RF Safety coordination consultant: J. Etheridge EN/ACE Integration S. Mehanneche EN/ACE logo area G. Vandoni, BE/RF 19

YETS – a challenge logo area G. Vandoni, BE/RF 20

CC SPS tests in 2018 16 Feb 3 x LHC Technical Stops 3 x 48 h SPS stops, then beam to NA LHC SPS Test program Commissioning with beam Jun A Technical Stop 1 1 1 48 h NA & MDs If we gain sufficient confidence Operation, reliability, transparency Emittance growth study Sep High intensity beam ≤ 4 trains, at injection energy 26 Ge. V, check beam induced cavity issues; machine protection; impedance. Nov Wednesday MDs 10 h weekly but compatible with LHC beam request Ø Minimal time (≤ 10 min) to displace table Ø No access to SPS 21 logo area G. Vandoni, BE/RF

SPS test programme Budget § WP 4 Crab programme: 86. 2 MCHF § SPS tests programme: SPS Teststand 25% 2% 17. 8 MCHF SPS PROGRAM BREAKDOWN 1%1% SPS Prototype cryomodules SM 18 Infrastructure 4% 5% Cryogenics 13% 7% SM 18 Infrastructure logo area Vacuum Electricity 67% Transfer Table Other services SPS prototype cryomodule G. Vandoni, BE/RF 22

SPS test-stand Budget Overshoot of 4% of 2016 budget, 1% of total budget logo area G. Vandoni, BE/RF 23

To conclude The SPS crab-cavity test program shows a vigorous progress … but deserves continuous attention and respect of the roadmap to match the challenging target Several groups and teams are strongly involved, in the Cryomodule development, the SM 18 testing program and the preparation of the SPS test stand A strong coordination is now put in place to ensure that the same pace is kept and that goals are coherent within involved teams logo area G. Vandoni, BE/RF 24

Thank you for your attention R. Calaga, O. Capatina, F. Gerigk, C. Zanoni, A. Macpherson, C. Gaignant, T. Otto, E. Montesinos, F. Killing, S. Calvo, L. Arnaudon, D. Glenat, P. Baudrenghien, J. Ferreira Bento, S. Claudet, K. Brodzinski, L. Delprat, S. Grau, M. Dole, N. Broca, T. Ladzinski, K. Artoos, J. Swieszek, M. Sosin, V. Baglin, C. Pasquino, M. Bernardini, F. Galleazzi, S. Mehanneche, S. Bartolome, D. Mcfarlane, A. Berjillos, J. Etheridge, B. Bannister, P. Pepinster, A. Martinez Selles, G. Canale, G. Gros, J. C. Guillaume, T. Slettestol Glaerum, J. P. Sferruzza, T. Lefevre, C. Zamantzas, C. Boccard, K. G. Lindell, C. Bertone, P. Vallet, K. Cornelis, V. Kain, H. Bartosik, J. Dalla-Costa… logo area G. Vandoni, BE/RF 25

Status of work progress – SPS infrastructure PHASE 1 BA structures Cryo warm pipework Racks, cables Cabling Site preparation New handling eq. Vacuum layout PHASE 2 RF Power LLRF & Controls Cryo Refrigeration New handling eq. Cryo distribution line Preparation (YETS 15 -16) Transfer Table Cryo Refrigeration & Distribution Cryo. Module BA 6 cleared, uncabling tunnel Integration In progress, finalized for phase 1 in EYETS 16 -17 Cryogenic distribution Contract placed, phase 1 in EYETS 16 -17 Infrastructure Pipework, cables, handling rails: installation in EYETS 16 -17 Transfer Table DPRQ 350 k. CHF, MS at Spec committee, Tech. Spec in progress logo Cryogenic Refrigeration area Offers received, Lo. I asked to confirm delivery <Jan'18 G. Vandoni, BE/RF 26

Milestones SPS– fixed dates EYETS 2016 -2017 22/12 to 4/1 24/3 5/1 15/12 12. 4 weeks YETS 2017 -2018 24/12 to 6/1 24/2 7/1 17/12 8 weeks logo area 3 weeks cold checkout G. Vandoni, BE/RF 27

SPS Installation – EYETS planning Main activities § § § Cryogenic distribution line installation Uncabling & Cabling (10 km, ~200 cables) New vacuum layout implemented New handling equipment in LSS 6, TA 6, PA 6 New supporting structures in BA 6, to make work outside TS possible Sequencing § § Transport lane / scaffold, integration in transport calendar No cable pulling & welding at same time First Civil Engineering, then pipework, then cabling Field coordinator, SPS/OP Critical path logo area Cryogenic distribution line G. Vandoni, BE/RF 28

Technical Stops w SPS access in 2017 run Cables identification and check by users Cables are validated by EN/EL, but errors are often later spotted by users Approx 200 cables will be pulled around the crab zone (10 km) Installation of smaller items: Supports, patch panels Cable pulling for ODH and flashing lights Installation of cryogenic equipment? Valve boxes, cold-box Foreseen TS are short (36 hrs) and may slide Unforeseen Stops are…. unforeseen, but may be longer logo area G. Vandoni, BE/RF 29

Safety review 9 -10 Nov 2016 Indico 573824 Presentation of system Risks: cryomodule transfer table RF operational Reviewer’s conclusions logo area G. Vandoni, BE/RF 30

Safety review outcome The reviewers appreciated the excellent presentations and the stimulating discussion from the participants. The reviewers were also positively impressed by amount of work and thinking that went into safety aspects of the crab cavity project. Recognized risks § BA 6: § noise issue with cryo compressor + cooling station § Oil spill-out from compressor § PA 6 Shaft: § ODH related to LN 2 § Tunnel § § ODH RF Power as EIS Mitigation by access limitation Table movement: monitor force logo area PENDING ISSUES Detailed layout for ODH + flash Risk analysis with fault tree for cryo MCI G. Vandoni, BE/RF 31

SRF - a complex infrastructure Cryomodule on a beam by-pass A motorized transfer table supports the CCCM and proximity ancillaries Least access in operation to change position in ~10 min PARKING POSITION RF Power equipment logo area ODH + Alarms Survey equip. Diagnostics No encroaching of the transport lane 2 x RF power circulators and loads, 6 x. HOM loads Waveguides and coax cables Safety IN-BEAM POSITION Cryogenics Service Module Local Dewar 2 x Helium pumps for 2 K Transfer line → to fridge BLM, BPM Survey equip. Vacuum: beam & cryomodule Sector valves Additional pumps Permanent turbogroup G. Vandoni 32