Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 MYRRHA Multipurpose.

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Presentation transcript:

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 MYRRHA Multipurpose hYbrid Research Reactor for High-tech Applications The MYRRHA LEBT test stand The MYRRHA LEBT test stand Roberto Salemme ADT - SCKCEN

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 MYRRHA Linear Accelerator 2 protons: 2÷4 mA, CW, 600 MeV MYRRHA 5 cell Elliptical 704 MHz 2 gap Spoke 352 MHz 80.8 MeV MeV 600 MeV Doubled Injector, multicell structures, up to MHz: ECR ion source, 30 keV LEBT 4-rod RFQ, 1.5 MeV RT-CH, 3.5 MeV SC-CH, 17 MeV Superconducting LINAC, modular, individually controlled cavities, warm quadrupoles doublets and diagnostics: β=0.375 β= MeV β=0.705 Injectors 176 MHz

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 R&D line – MeV 3.6 MeV 17.0 MeV 4-rod RFQ QWR CH1 CH2 CH3 CH4 Rebuncher CH6/7 CH8/9 CH10/11

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 : general layout 4 General layout of the experimental test stand in UCL/Centre de Ressources du Cyclotron (CRC) at Louvain-la-Neuve, Belgium:

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 The ECR proton source 5 Monogan 1000 ECR Ion souce – 30keV, 20mA Electron Cyclotron Resonance, 2.45 GHz multi-electrodes extraction system flat magnetic profile configuration by PMs tapered axial RF injection Einzel electrostatic focusing lens accelerating voltage30 kV (40 kV capable) beam current20 mA DC RF2.45 GHz, 1200 W transverse 5 mA0.1 π·mm·mrad RMS norm. magnetic systemPermanent Magnets autonomous control systemNI CompactRIO provisions for reliability/repairability beam diagnostics devices incl.: Faraday Cup, Allison scanner courtesy of Pantechnik SA

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Acceptance Tests 6 Beam characterization in a short test line (source, dipole, FC, Allison scanner, dump) Max p beam current achieved: 16mA Long stability run (24hrs), standalone system, up to 12 mA Excellent stability shown with brief recovery time in case of electrical discharges

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Acceptance Tests 7 Total efficiency : 84% Includes beam transport efficiency (total current from power supply divided by the sum of measured intensity) and HV losses (bleeder) Ionisation efficiency (ion intensity divided by total measured intensity) H+ =63% H2+=30% H3+=7%

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Current setup (UCL/CRC, LLN, Belgium) 8

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Current investigations 9 Beam characterization at the exit of the Ion Source Measurements on total beam current (H+, H2+, H3+ species) Investigations on: → beam emittance → influence of the Einzel lens → back-tracking and validation of multiparticle simulations (Tracewin) Einzel foc.= 0 kV Einzel foc.= 22.3 kV Einzel foc.= 25.5 kV courtesy of F Bouly Vertical transverse phase space, tot. beam current ~9 mA, z = m

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Low Energy Beam Transport (LEBT) line 10 Conceptual design by IPNO and SCKCEN, engineering design LPSC Magnetic concept, optimized self space charge compensation, beam species separation, allows for diagnostics insertions Goal: provide a centred matched beam at the RFQ entrance, ε trans < 0.2 π∙mm ∙mrad norm. RMS (RFQ design value), α = 0.88, β = 0.04 mm/(π∙mrad) Horizontal Phase Space at the RFQ entrance (vertical is similar), courtesy of JP Carneiro Multiparticle tracking through LEBT and first RFQ cell, with slits (vertical is similar), courtesy of JL Biarotte

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Low Energy Beam Transport (LEBT) line 11 Faraday cup Allison scanners and beam profiler 2-axis collimation slits Solenoids + H/V steerers Gas injection ports ECR 30 keV Ion Source Beam chopper and back-up port

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 LEBT – Solenoid magnets and dipole steerers 12 Full length=260mm Outer diameter~450mm Central field Bz(r=0,z=0)> 0.25T Inner diameter with steerer coils=158mm End plate central hole diameter=157mm Solenoidal field integral> 0.06T.m H,V steerer dipole field integral> 3.1∙10 -4 T.m Stray field ||B|| at (r=0,z=300)< 3.3mT Stray field ||B|| at (r=100,z=270)< 3.3mT Specification based on LPSC, IPNO and SCKCEN pre-design study Released to a limited number of suppliers Under procurement from Sigma Phi, France

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 LEBT – diagnostics 13 Suitable FC found in SPIRAL2 cup, design reproducible from IPN Lyon Two Allison scanners for both H/V axes transverse emittance measurement Collimating slits (2-axes, 4 slits) designed by LPSC Evaluation of new additional diagnostic equipment: a Vibrating Wire profilemeter

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 Beam delivery: reactor + Beam delivery: 250 Hz macro cycle 5 to 190 μs 5 kHz repetition time 14 t ISOL extraction kicker cycle Chopper cycle 200 μs 5 μs 4 ms (250 Hz) 5+a μs 5+b μs Beam cycle 190-a μs 3800-b μs t t for reactor subcritical monitoring 200 μs/250 Hz beam interruptions are required using an extraction kicker, 600 MeV, 190 μs/250 Hz beam pulses become available for an facility

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 LEBT – RFQ interface kV 0 kV 0 V 140 mm 108 mm ϕ 250 mm Slow electrostatic beam chopper to create macro-pulsed beam structures on DC LEBT beam Beam dumped before RFQ injection onto RFQ collimator ACCT to monitor produced beam structure and RFQ transmission efficiency

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st 2014 LEBT – Control System 16 Scope: LEBT integration Magnetic elements PSs (solenoids, steerers) Faraday cup, slits (motion controllers), profiler, beam chopper, beam dump Ancillaries: vacuum system, cooling, gas injection system Timing system MP and safety interlocks Nomenclature, archiving, GUI Pillars: EPICS 3-tier architecture, Linux, cPCI Industry-based field bus (Profibus) and automation (PLC) solutions Micro Research Finland (MRF) timing transport layer based on FPGA

Copyright © 2014 SCKCEN EuCARD-2/MAX Accelerators for Accelerator Driven Systems Workshop – CERN, Switzerland – March 20 th –21 st Copyright © SCK  CEN PLEASE NOTE! This presentation contains data, information and formats for dedicated use ONLY and may not be copied, distributed or cited without the explicit permission of the SCKCEN. If this has been obtained, please reference it as a “personal communication. By courtesy of SCKCEN”. SCKCEN Studiecentrum voor Kernenergie Centre d'Etude de l'Energie Nucléaire Belgian Nuclear Research Centre Stichting van Openbaar Nut Fondation d'Utilité Publique Foundation of Public Utility Registered Office: Avenue Herrmann-Debrouxlaan 40 – BE-1160 BRUSSELS Operational Office: Boeretang 200 – BE-2400 MOL