FREIA Test Stand Status and Outlook Roger Ruber for the FREIA - PowerPoint PPT Presentation

FREIA Test Stand Status and Outlook Roger Ruber for the FREIA Laboratory Uppsala University ESS WP10 Internal Review 22 May 2014

What & Whom? Facility for Research Instrumentation and Accelerator Development State-of-the-art Equipment cryogenics control room - liquid helium - equipment controls - liquid nitrogen - data acquisition Competent and motivated staff collaboration with HEP & NP (IFA), solid-state electronics (Teknikum), Ångström workshop and TSL Funded by KAWS, Government, vertical cryostat Uppsala Univ. 28 Feb 2014 3 bunkers with test stands RF power sources horizontal cryostat 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 2

The New FREIA Laboratory 18 June 2013 17 October 2013 Inaugurated 18 June 2013 30 January 2014 15 October 2013 19 February 2014 25 Oct. 2013 First Liquid Helium 14 March 2014 Photos courtesy T. Thörnlund/UU 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 3

On-going Projects (UU-ESS Contract) ESS funding Frequency [MHz] Total # of cavities Total # of cryomodules 2011 – 2015 352.21 26 13 spoke prototype High-power Spoke Linac Testing RF Source Development UU-ESS-CERN-Industry Collaboration UU-ESS-IPNO-CERN Collaboration • vacuum tube amplifier (Thales, • high power soak testing of Electrosys) power source, controls, amplitude and • solid-state amplifier (Siemens) phase stability with accelerating cavity • SSA module & combiner optimization • test cavity tuning system, dynamic load, (NXP, ESRF) electron emission and multipactoring 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 4

Future Projects (New UU-ESS Contract) Spoke Linac Cryomodules (13#) Spoke Linac Valve Boxes (13#) UU-ESS-IPNO Collaboration UU-ESS-IPNO Collaboration • continue prototype testing (2016) • valve box connecting cryomodule to the cryogenic distribution line • acceptance testing of spoke linac cryostat with 2 cavities each • prototype testing • requires high throughput and planning • series testing (tbc) (7-8 weeks per cryomodule) 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 5

Contractual Time Line ESS-UU contract 2011, updated 2013 (until end 2015) Discussion started on new contract ESS deliverables • 30-Jun-2014: prototype cavity → delayed (~Dec-2014?) and LLRF • 30-Jun-2015: prototype cryomodule and LLRF UU deliverables • 30-Jun-2014: test plan proposal • 30-Jun-2015: cavity test report • 31-Dec-2015: cryomodule test status report • 30-Jun-2016: cryomodule test report (if contract extension) → UU might need to delay due to delayed cavity delivery 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 6

Spoke Cavity & Cryomodule • IPN Orsay design – single spoke – f 0 = 352.21 MHz – T oper = ~2K • Phase 1: Bare cavity test – with antenna (and helium tank) – low power – verify Orsay measurement at FREIA deformation • Phase 2: Dressed cavity test – with power coupler, tuners – full power – verify behaviour before ordering series • Phase 3: Cryomodule & valve box test – full power on both cavities – verify behaviour before ordering series 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 7

The Test Stand • Three main subsystems needed RF Power Source Cryogenics Courtesy of P. Duthil To avoid radiation in public areas: Spoke Cavity (superconducting) Cryostat Bunker 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 8

Test Stand Implementation (Phase 1) HNOSS (Spoke Cryomodule) Horizontal Cryostat Bunker SSA Power Station Helium Liquefier Helium Cold Gas Tetrode Heater Power Station 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 9

RF Transmitter Tetrode based Solid-state based Commercial tender: Electrosys Industry development: Siemens • first prototype, ESS pre-series #1 • R&D towards alternative technology • based on 2x TH-595, water+air cooled • based on 4x 100 kW 19” racks • SSA pre-amplifier • vendor-specific combiners – different design 1st and 2nd stage 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 10

Tetrode TH-595 Test Results 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 11

RF Distribution Connecting • 3x RF power station – 2x tetrode – 1x SSA • 3x cavity – 1x in HNOSS – 2x in cryomodule (CM) • 2 lines – 1x coaxial line: SSA/tetrode to HNOSS/CM – 1x waveguide line: tetrode to CM • use – circulator w/o pressurization (prototyping) – ferrite and resistive loads (prototyping) – coaxial switch – directional couplers etc 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 12

Cryogenics Cryogenic System Commercial tender: Linde • Over 140 l/h at 4.5K (LN2 pre-cooling) • 2000 l LHe dewar/buffer, 3+1 outlets • 20 m3 LN2 tank • 100 m3 gasbag + recovery system • HNOSS connected in closed loop 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 13

HNOSS Horizontal Cryostat HNOSS: Horizontal Nugget for Operation of Superconducting Systems Commercial tender: Cryo Diffusion Design: ACS • Main Vacuum Vessel – 3240 x ø1300mm inner volume – “beam” axis at 1600mm • Valve box (on top of main vessel) • Interconnection box (ICB) – Distributes cryogens to HNOSS and CM • Cryogenic transfer lines – LN2 and LHe • Gas heater for return GHe – from 2K to 300K • Control system + mock-up cavity for acceptance test 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 14

Bunker for Radiation Protection Expected average < 1µSv/h outside the bunker 4 000 mm Chicane: 4 800 mm - Waveguides Bunker interior - Return GHe lines 10 400 mm 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 15

Controls and Monitoring • LLRF – developed by Lund University – based on DESY µTCA (special 500MHz module) • Controls and Interlocks – EPICS standard – using ESS control box – based on NI cRIO system • Monitoring – LabVIEW – based on NI hardware • FPGA with FlexRIO ADCs (5772:12bit, 1.6Gs/s) • PXI ADCs (5160: 10bit, 2.5Gs/s, 500MHz) – help from NI engineers for code development 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 16

Auxiliary Systems Vacuum Cooling • sub-atmospheric pumps • Cooling – RF power station • insulation vacuum cryostats – vacuum pumps • “beam” vacuum cavities – cryo compressors – power couplers (tbc) 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 17

Project Planning Time Line 2013 2014 2015 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Cavity bare X dressed X Cryomodule module X valve box X Controls LLRF X X RF transmitter tetrode O X SSA X distribution X X Cryogenics liquefier X 2K pumps O X Cryostat O X Controls controls X monitoring X 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 18

Status Overview • Technical maturity – overall delay in order of 3-6 months – prototype testing prepares us for series testing – based on proven technology • Requirements and interfaces – workshop on testing organized last Nov 2013, next one after Summer – discussion continuing, working on test proposal • Outstanding procurement & developments – valve box for cryomodule testing – RF distribution parts – vacuum pumps and mobile clean room • Resources – staff is limited which delays some work but working on new recruitment – excellent team with broad knowledge, well defined responsibilities – excellent collaboration with IPNO, ESS, CERN and DESY 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 19

Conclusions • Status – have delays, but we manage it – time might be short towards end of contract & ESS decision on order • FREIA laboratory enables – excellent test facilities for (spoke) cavities – development and test of cavities, controls and others... • FREIA team is good on the way to complete its tasks! • We should agree on the new contract for 2016-2019. 22-May-2014 WP10 Review - Roger Ruber - FREIA Status and Outlook 20