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The FREIA Test Program

The FREIA Test Program. Roger Ruber for the Uppsala Accelerator Group & FREIA 20-21 November 2013, Uppsala ESS-FREIA Spoke Cavity Testing Review and Planning Meeting. Responsibility for ESS Accelerator. Contribution to the technical design & construction effort

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The FREIA Test Program

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  1. The FREIA Test Program Roger Ruber for the Uppsala Accelerator Group & FREIA 20-21 November 2013, Uppsala ESS-FREIA Spoke Cavity Testing Review and Planning Meeting

  2. Responsibility for ESS Accelerator • Contribution to the technical design & construction effort • design concept spoke accelerating cavity power source • design concept radio-frequency (RF) power distribution • survey test stand infrastructure and requirements • study of upgrade scenarios RF systems for ESS power upgrade • Development power station for spoke cavities • soak test with water cooled load, then accelerating cavity, incl. controls • collaboration with industry to develop vacuum tube and solid-state based prototypes • System test, power station withspoke cavity and cryostat-module • fully dressed prototype cavity (in test cryostat) • complete prototype module (2 spoke cavities) • Acceptance test cryostat-modules(proposal submitted) • for all final modules before installation ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  3. What (doesthismean)? Criteriatojudge the test results • Efficiency • toreduceelectricitycosts • reusecoolingwater • Stability • relative fast responseto perturbations • predictabilityof the system • requirestestingof extreme conditions • Reliability • slow variations such as drift and agingthataffectparameters • abrupt failureofsomething • requires long-term soaktesting ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  4. … for the sub-systems … • RF power station & RF distribution • achieverequiredperformance: 14 Hz, 2.9+tfillms, power-to-beam+overheadkWpeak • stable long term operation • safe handling ofreflections, sparking, interlocks and faults • LLRF and controls • RF control (1% amplitude, 1ophase) • compensationLorentz detuning&microphonics • Spokecavity • achieverequiredperformance: Eacc, Q0, f0, losses • stable long term operation • Spokecryo-module • as for singlecavity • no undesirablecouplingbetweencavities • achievecryogenicrequirements: cool down, losses ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  5. How ? SpokeCavity LLRF Helium Liquefier RF Power Station • General idea • commission and test infrastructurebeforearrivalsub-systems • new facility, so must commissionequipmenttoguarantee proper operation • personnelshouldhavetimetofamiliarizewithequipment • commission and test each equipment before combining • limitedtimelinetowardsarrivalofcavity • limitedlearningcurvetowardsprototypecryo-moduletesting • Will be first major test for FREIA & ESS (of a whole accelerator section) • critical for decision towards cavity series production • critical for decision towards RF & LLRF component design and procurement Cryo-module HNOSS HorizontalCryostat 2K pumps today ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  6. Cryogenics & Cryostat Helium Liquefier • Helium and Nitrogen Cryogenics: contract with Linde • factory test (cold box & controls): January • delivery & installation: February-March • commissioning & acceptance test (by Linde): March-April • HNOSS Cryostat and Transfer Lines: contracts with ACS and Cryo Diffusion • factory test (LN2): April • delivery & installation: May-June • commissioning (by UU and ACS): Summer • Sub-atmospheric pumps: tender launched last week • delivery & installation: May-June • commissioning: Summer HNOSS HorizontalCryostat 2K pumps today ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  7. RF Power Station and Distribution Tetrode • Tetrodebased: contractwithElectrosys • factory test tetrodes (Thales, Thonon): thisweek • factory test (Electrosys): • delivery & installation: January-February • commissioning and acceptance test (by Electrosys): February-March • Solid-statebased:Siemensdevelopment • on loanto Uppsala, expecteddelivery: February • RF Distrbution • circulator and loadsordered • tender ofremaining parts now under preparation Solid State today ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  8. Controls and Monitoring • Safety • radiationmonitoring • personnel& equipmentsafety interlocks • Equipment controls • basecontrolsincluded in contracts (Cryo Diffusion, Electrosys, Linde) • overall integration by Uppsala (EPICS based), workingwithequipmentmanufacturers • Data acquisition and monitoring • RF measurements (amplitude, phase) • infrastructure & environmentmonitoring (temperature, pressure & humidity) • … any special experiments … • LLRF • under development at Lund, updated as testingprogresses… LLRF today ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  9. Single “Double Spoke” Cavity Onlyafter all other systems havebeensuccessfullycommissioned Then… • installcavityintocryostat • tooling under design by ACS • connectcavity vacuum pumping • alwayskeeppumpingifpossible… • connecttocryogenics, RF etc. • connection & functionality test • RF couplers, tuners and instrumentation Note thatthiswill be the firsttime (for cavity, cryostat and team) Expect extra time for • connections • cool down, RF conditioning, testing… ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  10. Spoke Cryo-module Wehaveoneyearto test the firstspokecavity • should make optimum useto do it careful • exhaustivetesting for efficiency, stability and reliability • do it carefully and learnhowtooperateequipment and assembly • polish anyissues • toprepare for order of series production • arrivalofprototypecryo-module Prototypespokecryo-module • repeat the singlecavityexperience • test cryostatbehaviour • search for anycorrelation and interactions betweencavities • polish anyissues and learntoinstall/test/remove • prepare for series testingofcryo-modules ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

  11. Summary • Further discussions during this meeting • We have ideas on the testing but want to discuss with you for your input and experience • Onsetto a commonlyagreed test program Thanks toyou all ! http://blog.qatestlab.com/2011/04/01/how-to-involve-non-functional-testing-in-your-project/ ESS-FREIA Spoke Cavity Testing - Roger Ruber - Proposed Test Program

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