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STATUS OF THE SCSS CONTROL SYSTEM – FIRST PHASE OF AN 8GEV XFEL PROJECT IN SPRING-8

STATUS OF THE SCSS CONTROL SYSTEM – FIRST PHASE OF AN 8GEV XFEL PROJECT IN SPRING-8. T.Fukui 1 , R.Tanaka 1 , T.Ohata 1 , M.Takeuchi 1 , Y.Otake 2 , M.Kitamura 2 , T. Ishikawa 2 , H. Kitamura 2 , T. Shintake 2 and SCSS project team2 1 JASRI/SPring-8, Hyogo 679-5198, Japan.

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STATUS OF THE SCSS CONTROL SYSTEM – FIRST PHASE OF AN 8GEV XFEL PROJECT IN SPRING-8

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  1. STATUS OF THE SCSS CONTROL SYSTEM– FIRST PHASE OF AN 8GEV XFEL PROJECT IN SPRING-8 T.Fukui1, R.Tanaka1, T.Ohata1, M.Takeuchi1, Y.Otake2, M.Kitamura2, T. Ishikawa2, H. Kitamura2, T. Shintake2 and SCSS project team2 1 JASRI/SPring-8, Hyogo 679-5198, Japan. 2Harima Institute, RIKEN, Hyogo 679-5148, Japan ICALEPCS 2005, Geneva, 10-Oct-2005

  2. Contents • Introduction • What is SCSS • The SCSS prototype accelerator • Control system • Software • Computing system • Developed hardware • Summary

  3. X-ray Free Electron Laser • XFEL will give us very short-pulsed, spatially coherent and super-intense xrays. • Length 0.25ps, Emittance 0.5pmm.mrad, Peak Brilliance 1030 - 1033 • These properties will open up a huge number of new possibilities in scientific fields • Atomic and Molecular Physics • Condensed Matter Physics • Life and Medical Sciences • Materials Sciences • Chemistry • Optical and Laser Sciences

  4. SASE: Self Amplification of Spontaneous Emission • The single pass FEL based SASE is only one realistic candidate to generate intense coherent radiation at X-ray wavelength. • No Mirror is available below 100 nm. • we need a very stable and reliable machine, and stable clean electron beam.

  5. What is SCSS • SCSS:SPring-8 Compact SASE Source • Low Emittance Injector Short Saturation Length • High Gradient Accelerator Short Accelerator Length • Short Period Undulator Lower Beam Energy • These make a machine compact, and fit the SPring-8 1km-long beamline space

  6. Bird eye view of SCSS 500m

  7. SCSS 0.35km PAL-XFEL 0.35km LCLS 1.23km TESLA-XFEL 2.1km

  8. What is SCSS – cont’ • Total budget of the SCSS will be 40 billion yen (350M US$) • Budget for next year is approved by the Ministry of Education,Culture,Sports,Science and Technology. • We are waiting for final approval by the Japanese government.

  9. VUVX X-ray

  10. The SCSS prototype accelerator • The SCSS prototype accelerator consists of essential components for the 8GeV SCSS • check to ensure technology and feasibility • commissioning willstart next month

  11. The SCSS prototype accelerator – cont’ • Beam energy is 250 MeV and target wavelength is 60 nm. • Total length of the accelerator is 60m • It will be used for VUV-FEL experimental users • It is possible to use for THz experiments

  12. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • Low emittance electron gun with a CeB6 crystal thermionic cathode • Normalized emittance is 1.1π mm.mrad

  13. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • Low emittance electron gun with a CeB6 crystal thermionic cathode • Normalized emittance is 1.1π mm.mrad • Beam Deflector • Bunch length is ~ 1nsec

  14. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • 238MHz buncher & 476MHz booster • Beam energy is 1.1MeV • Velocity bunching

  15. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • 238MHz buncher & 476MHz booster • Beam energy is 1.1MeV • S-band APS cavity and linac • Beam energy is 50MeV • To avoid space charge effect

  16. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • 238MHz buncher & 476MHz booster • Beam energy is 1.1MeV • S-band APS cavity and linac • Beam energy is 50MeV • Bunch compressor • Bunch length is ~ 12psec

  17. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • C-band linacs ( 5712MHz, 40MeV/m ) • 5712MHz 50MW klystron with rf pulse compressor • Accelerating structure is 1.8m length * 4 • Beam energy is 250MeV • Bunch length ~ 0.4psec after chicane

  18. Prebuncher S-Band C-Band Linacs Undulator 50MeV Beam Dump 500kV Pulse Gun 238MHz 476MHz APS Linac Bunch Compressor 250MeV Beam Dump Deflector Chicane The SCSS prototype accelerator • In-vacuum undulators • Minimum gap is 3.5mm with 15mm period • 4.5m long * 2

  19. Present status • Machine construction is almost finished • RF aging will be started in this week • Each component of control system is ready, and over all test will be started next week • A commissioning will start next month.

  20. Status at 8-Sep-2005

  21. Status at 22-Sep-2005

  22. Present status 7-Oct-2005

  23. Firewall DMZ LAN Office LAN Program Development Web DB & File server GigaEther Switch Operator Consol 1000BASE-SX VME Gun Magnet & Interlock Magnet Power Supply H-PCF PLC Buncher S-Band Bunch Compressor C-Band 1 C-Band 2 ID Control system

  24. Software • We use Message And Database Oriented Control Architecture (MADOCA) • Designed by SPring-8 control group in 1994 • MADOCA is scalable, covering wide range of accelerators and beamlines. • Develop the prototype accelerator control software to adapt the full-scale SCSS • Using X-Mate, a GUI builder enables rapid prototyping and easy development of GUIs

  25. GUI GUI GUI Console Logging database Message server Alarm Sybase Parameter database Access server Access server Collector Access server Alarm database RF, Mag … Database server Equipment manager Collector & Poller No need to develop User Function User Function System V IPC ONC/RPC devices devices VMEs SQL data access

  26. Computing system • Operation consoles are IA-32 workstations running RedHat Enterprise Linux 3. • Database and file servers are shared with the SPring-8 control system. • We use Sybase ASE12.0 for the RDBMS • MC/ServiceGuard is used for High Availability Cluster.

  27. Computing system –Cont’ • VME controllers use IA-32 processor boards (Pentium III 700MHz & Pentium M 1.1GHz) running Solaris 9 x86 with CF cards. • Use Programmable Logic Controllers (PLC) and the Remote I/O (OPT-VME) • Reduce the number of I/O signal wiring • Gigabit Ethernet is used for a backbone of network • VLAN & PoE technology

  28. We developed a high-speed A/D and D/A VME boards. Both are 238MHz clock and 12bit resolution Fully digital controlled RF low-level with IQ modulator and demodulator is needed to provide a stable beam for FEL. A/D boards are used for rf-BPMs and CTs. FPGA I Modulator DA Q DA e- Q Phase Flip FPGA Demodulator I AD I Q AD Developed hardware components PO2.050-4 - Thursday October 13

  29. We developed a master trigger and a trigger delay VME board. Fast GaAs logic devices to synchronize the 5712 MHz FPGA (238MHz clock) with 24 bits counters The time jitter is 0.7ps. ~ Comparable to bunch length = 0.4psec 5712MHz CK D Q 24bits counter CK D Q FPGA 238MHz Trigger Developed hardware components

  30. We developed a VME board with FL-net interface for communication between PLC and VME. FL-net is Ethernet based factory floor network. Established as JEM standards in Nov 2000 and as JIS standards in Feb 2004 Developed hardware components FL-net JEM:Japan Electrical Manufacturers JIS:Japan Industrial Standards

  31. The newly developed 'FA link protocol' on UDP/IP with 10Mbps Master-less Token bus protocol 8k words and 8k bits data are transferred by a cyclic transmission. It is possible to use a Message for peer to peer communication. Data transfer rate is 1.4msec/node. FL-net

  32. Firewall DMZ LAN Office LAN Program Development Web DB & File server GigaEther Switch Operator Consol 1000BASE-SX VME Gun Magnet & Interlock Magnet Power Supply H-PCF PLC Buncher S-Band Bunch Compressor C-Band 1 C-Band 2 ID Gigabit Virtual LAN For FL-net

  33. We developed a Linux box with PoE capability for a temperature measurement. Small foot print (130mm * 100* 30mm). We ported the MADOCA on SH-Linux (kernel 2.4.14). Resolution is 0.001degree C with 3 wire RTD. Accuracy is ~ 0.002degree C. Hardware Components - Cont’ WE1.3-4O - Wednesday October 12

  34. Schedule

  35. Summary • We built the control system, using the MADOCA, for the SCSS prototype accelerator. • It will be used for 8GeV SCSS. • We developed the FL-net module, Trigger module, A/D and D/A module for the SCSS. • The control system is ready. • No need to modify the MADOCA frame • Only one and half year to build!

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