Presentation on theme: "THE RADIO FREQUENCY SYSTEM FOR SOLARIS TOWARDS OPERATION"— Presentation transcript:
1 THE RADIO FREQUENCY SYSTEM FOR SOLARIS TOWARDS OPERATION P. Borowiec*, C.J. Bocchetta, P. Bulira, P.P. Goryl, M.P. Nowak, M.J. Stankiewicz, P. Tracz,P. Szostak, Ł. Walczak, A.I. Wawrzyniak, J. Wiechecki, T. Zawierucha, Ł.ŻytniakNational Synchrotron Radiation Centre SOLARIS, Jagiellonian University, Gronostajowa 7,Kraków, Poland*PolandKraków.Experimental Hall: 50m x 60mLinac tunnel: 100 mABOUT SOLARISThe 3rd generation synchrotron facility SOLARIS is beingbuilt in Krakow, Poland. The project bases on design and developments from MAX-lab. It will be a copy the MAX IV 1.5 GeV Storage Ring and part of the injection system, which are being concurrently built in Sweden.S-band K2 RF Unit for accelerating sectionsManufacturer: ScandiNova Systems AB, Uppsala, SwedenSolid-state modulatorRF frequency: 2998,5 MHzRF peak power from Klystron: 37 MWPulse length: 4,5 µsRepetition rate: HzKlystron: Toshiba E37310Status: all 3 RF units manufacturedS-band K1 RF Unit for RF thermionic gunManufacturer: ScandiNova Systems AB, Uppsala, SwedenSolid-state modulatorRF frequency: 2998,5 MHzRF peak power from Klystron: 8 MWPulse length: 3 µsRepetition rate: 0 – 10 HzKlystron: Toshiba TH2175A-1Status: in production, deliveryLINACThe main injector is a linear accelerator consistingof six S-band travelling wave accelerating structures combined in three accelerating units. Exit energyof the linac will be up to 600MeV.LLRF for each RF Unit in the LinacManufacturer: Max IV, Lund, SwedenPulse shapingPhase adjustment180º phase swap for SLEDStatus: manufacturedSLED cavity with 3dB hybrid couplerManufacturer: Research Instruments GmbH, Bergisch Gladbach, GermanySLED gain: up to 5Status: all cavities manufactured and conditionedIsolatorManufacturer: AFT, Backnang – Waldrems, GermanyForward peak power: 20 MWForward average power: 5 kWReverse power: 100% at any phaseStatus: in production, deliveryWaveguide directional couplersManufacturer: Max IV, Lund, SwedenFlanges: LILCoupling: 50 dBSome have CF40 port for ion pump connecionStatus: manufacturedPic.1 Pre-injector with one accelerating unitS-band travelling wave accelerating structureManufacturer: Research Instruments GmbH, Bergisch Gladbach, GermanyResonant mode: 2π/3Accelerating gradient : 20MV/mLength: 5mStatus: all 6 sections manufacturedand conditioned100MHz + 300MHz + 700MHz combinerfor stripline chopperManufacturer: Exir Broadcasting AB, Hörby, SwedenStatus: prototype in test at Max IVWaveguidesManufacturer: IHEP, Beijing, ChinaSize: WR284Flanges: LIL for UHV, CPR for SF6Status:manufactured for the linac,order in preparation for the gun, exp. deliveryStripline chopper to fit bunches time structureto the 100 MHz bucketManufacturer: Max IV, Lund, SwedenStatus: prototype in test at Max IV300MHz Landau CavityManufacturer: Research Instruments GmbH, Bergisch Gladbach, GermanyPassive cavityTuning range: ±550 kHzTotal voltage: 487 kVStatus: in production, deliverySTORAGE RINGThe storage ring is equipped with two 100MHz main and two Landau cavities. The ramping from injection to nominal energy is necessary. The storage ring has 96m of circumference.6 1/8” EIA rigid coax lineManufacturer: Exir Broadcasting AB, Hörby, SwedenStatus: order in preparation, exp. delivery100MHz Main CavityManufacturer: Research Instruments GmbH, Bergisch Gladbach, GermanyUpgraded MaxLab cavityResonant frequency: 99,93 MHzTuning range: ±540 kHzGap voltage: 300 kVStatus: in production, delivery100MHz RF Transmitter TT2C60KManufacturer: Electrosys S.r.l., Orvieto, ItalyTetrode transmitterRF frequency: 99,93 MHzRF peak power: 60 kW CWTetrode: Thales TH595Status: order in preparation, exp. deliveryIsolatorManufacturer: AFT, Backnang – Waldrems, GermanyForward peak power: 120 kW CWReverse power: 100% at any phaseStatus: in production, deliveryDigital LLRF for Storage RingManufacturer: ALBA, Barcelona, SpainCommercial µTCA boardControl of amplitude and phase cavity voltage and resonance frequency control (Tuning)Safety Interlock and DiagnosticI/Q demodulation techniqueStatus: in development, exp. delivery spring 2014Pic.2 Storage ring section with cavitiesQUALITY CONTROLThe components of the machine will be delivered by different manufacturers. It’s necessary to assure smooth transition from production, through installation to commissioning phase. According to quality policy which was established, each RF component is marked and has individual log-file. Quality control consists:Factory Acceptance TestIncoming visual inspectionSite Acceptance TestMeasurements of characteristic parameters before and after installationSince many RF elements are working under UHV conditions leak checks will be performed.SYNCHRONISATIONTwo Master Oscillators will be used, 3 GHz for the linac and 100MHz for the storage ring; both will be locked through 10MHz reference. Oscillators keep phase of the generated signal during frequency adjustment. Triggering system of the machine (from MRF, Norway) will be synchronized with 3 GHz MO.TIME SCHEDULEBuilding Ready: Autumn 2013Linac commissioning with beam: Spring 2014First Light: beginning 2015REFERENCESMAX IV Detailed Design Report, access https://www.maxlab.lu.se/node/1136A.Wawrzyniak „Linac report”Å. Andersson, Proc. IPAC’11, MOPC051C. J. Bocchetta, Proc. IPAC’11, THPC054J.Wiechecki,M.Nowak,T.Zawierucha „3D model of Solaris facility”INSTALLATION AND COMMISSIONINGAt first the linac will be installed. The reason is the availability of the infrastructure and the components. It gives possibility to switch on the RF power and carry out a conditioning of accelerating units.Storage ring will be assembled in second stage of installation.Project co-financed by the European Regional Development Fund under the Innovative Economy Operational Programm
Your consent to our cookies if you continue to use this website.