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CCC Meeting

CCC Meeting. Cryogenic Current Comparator in the FAIR Project. Jena, 7. April 2008 Marcus Schwickert, GSI Beam Diagnostics. Overview of FAIR / current status Beam diagnostics work package Tasks and installation locations for CCCs Boundary conditions / requirements

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CCC Meeting

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  1. CCC Meeting Cryogenic Current Comparatorin the FAIR Project Jena, 7. April 2008 Marcus Schwickert, GSI Beam Diagnostics Overview of FAIR / current status Beam diagnostics work package Tasks and installation locations for CCCs Boundary conditions / requirements Example: SIS100 extraction beam line

  2. FAIR Overview Existing UNILAC & SISas injector after upgrade p-LINAC:high current 70 mA, 70 MeV SIS100:Superconducting, 100 Tm, 1-10 GeV/u high current operation p to U design: p:4*1013, U28+: 5*1011 SIS300:300 Tm, stretcher or acceleration up to 30 GeV/u CR:stochastic cooling of RIB and pbar RESR:accumulation of pbar, deceleration of RIB NESR:versatile experimental ring for stable ions, RIB, pbar cooling, gas-target, e-A collider HESR:storage and acceleration of pbar to 14 GeV/u HEBT:for fast & slow extraction and low & high currents. CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  3. FAIR Kick-Off Event 7. November 2007 Current Status International partners signed communiqué: Austria, Germany, Spain, Finland, France, Poland, Romania, Russia, Sweden, Great Britain and State of Hesse In total 21 Expressions of Interest were submitted, i.e. international partners express their interest to take over responsibility for a FAIR work package Two possibilities for contributions: 1. In-kind, i.e. delivery of accelerator parts 2. cash At the moment: FAIR Technical Meetings on EoIs CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  4. Work Breakdown Structure • 94 WPs defined according to WBS, FBTR and Cost Book schematics CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  5. Beam Diagnostic System Definition Constituents of a Beam Diagnostic System: as given in the Work Breakdown Structure (WBS-Code 2.5.6) • Vacuum chamber • Detector / Sensor • Mechanics / Actuators / Feed-throughs • Analog and front-end Electronics • Cabling („short“ and „long“) • All Sub-systems (High voltage, Pressured air and Stepping motor control etc.) • Data Acquisition (VME, cPCI, PXI, ..) What is not included? • Vacuum infrastructure: pumps, pressure measurement • Controls infrastructure: Ethernet, timing distribution • Technical infrastructure: electricity, Pressured Air distribution, etc. CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  6. Work Package Structure Schematic for Beam Diagnostic Device • ADC Common Realization:GSI ContributionData AcquisitionEoI 13 • Scaler/Counter • Digitizer • I/O-board • Controller • Data concentrator/DSP Analog-Elektronics Detector Analog-Electronics • DAQ software Long Cables Digitization Drive Subsystems:HV / Gases / Compressed Air Step. motor ctrl. Embedded Controller Mechanics Accelerator Control System Network Electronics room Accelerator Tunnel • NO common scheme valid FOR ALL ~30 different beam diagnostic systems CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  7. Overview CR Beam Diagnostics CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  8. Overlaping Systems of Beam Diagnostics Goal: Use similar diagnostic devices for all machines to maximum extent ! Comprehensive Data Acquisition : common realization is essential CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  9. Expressions of Interest (EoI) Only 2 expressions of interest related to beam diagnostics: • Who will build the rest ?? • Fear of "Heidelberg-Syndrome" • No EoI for CCC yet • ~700 MEuro german contribution to FAIR • ?? MEuro for civil construction • ~15 MEuro for "data acquisition" • NO margin left for additional workpackage, e.g. CCC !! CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  10. CCC Installation Locations 6 CCC are foreseen for transmission determination Extraction SIS100/300 Beam dump S-FRS target Extraction SIS18 CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  11. Installation Locations in HEBT End of 2007: Detailed study of ion optical requirements for installation of beam diagnostic devices in HEBT by F. Hagenbuck (FAIR-SYN)Problem: Layout changed recently from superconducting to nc magnets! Equipment of HEBT-beamlines with beam diagnostic devices (only beamlines including CCC are shown) Beam parameters of beams passing beamline #6: CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  12. Example: Beamline # 6 #9 #6 CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  13. Requirements SIS100 Extraction Mechanics: - very little space, closed packed installations (magnets, cryogenic infrastructure, beamlines...) - restricted access (radiation safety) ... but: cryo-infrastructure is available Electronics: - problematic EMV (strong el.-magn. fields) CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  14. Achievements SIS18-CCC GSI prototype in 1997: • HEBT: slow extraction  online transmission control • Rings: low stored current e.g. RIB. Cryogenic Current Comparators: 7x109 Ar11+ at 300 MeV/u within 1.2 s, readout 20 μs: • Prototype tested at GSI in the 90ies • Improvement: Nb instead Pb for the flux transducer less temperature drift • reached 0.25 nA/√Hz  8 nA @ 1 kHz • R&D: GSI,DESY, MPI-K, Uni-Jena. CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  15. Goals for further development The new CCC should have: - low noise characteristic - resolution possibly in sub nA-range (1 nA  2E08 pps U28+) - good magnetic shielding - installation volume as small as possible - standardized mechanical layout, matched also for SIS100 injection line - optimized He-cryostat for long term operation between refills - standardized electronics with defined interfaces for current signal and I/O CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

  16. FAIR project started, expressions of interest are being discussed Definition of beam diagnostic workpackage Standardization as basic concept for overlapping systems Beam diagnostic layout of HEBT beam lines Special requirements for SIS100 injection High resolution, good noise shielding, small insertion length as goals for future CCC prototype Thank you for your attention. Summary CCC Meeting, CCC for FAIR , M. Schwickert, April 7, 2008

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