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Feedback Systems Update

Feedback Systems Update. Alessandro Drago SuperB General Meeting Perugia 16-19 June 2009. Why a new design. The fast advances of the electronics components make obsolete the present feedback systems Low emittance beams ask for low impact feedback systems. How.

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Feedback Systems Update

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  1. Feedback Systems Update Alessandro Drago SuperB General Meeting Perugia 16-19 June 2009

  2. Why a new design • The fast advances of the electronics components make obsolete the present feedback systems • Low emittance beams ask for low impact feedback systems How • Previous software/hardware legacy • Only one digital processing unit design for both longitudinal & transverse • Low noise front end receiver • 2 nsec longitudinal & transverse kickers • Reuse of old systems when possible • In particular, reuse of the power amplifiers (~50k$ for each 250W unit)

  3. Gproto / iGp evolution • After a unique first phase collaboration design, four slightly different hardware layouts have been designed [KEK, SLAC, DIMTEL + old Gproto] • Dmitry Teylman (DIMTEL Inc.) is going to start an iGp new release with 12 bits ADC: he claims that it will be ready for the begin of next year • The new iGP will have the same price list [100k$ + tax - %discount] • Interesting connected option: low noise front end [ 30k$ + tax - %discount] • DIMTEL does NOT sell the FPGA source code!

  4. Focusing on the digital processing unit:to do list for in-house R&D starting from Gproto / iGP experience • Analog to digital conversion @ 12 bits • Digital to analog conversion @ 16 bits • DSP in FPGA to implement FIR filters: gateware and firmware • Software: Operator Interface with connections to the systems • Final PCB including ADC, DAC, FPGA and interfaces

  5. ADC

  6. The dynamic range in DAFNE feedback analog blocks is in the range 78 dB – 88 dB

  7. ADC evaluation board • ADS5463EVM • NameADS5463 Evaluation ModuleStatusACTIVE • Price (US$) $299.00 

  8. DAC • MAX5891 • 16-Bit, 600Msps, High-Dynamic-Performance DAC with LVDS Inputs

  9. DAC evaluation boardPrice: $ 145,00 

  10. DAC evaluation board

  11. Xilinx FPGA:Virtex-II  Virtex-5  Virtex-6

  12. Virtex-5 Evaluation Boards[up to now no Virtex-6 boards] • Virtex-5 LXT/SXT FF1738 Prototyping • AFX-FF1738-500 PLATFORM • Platform with Xilinx FPGA $3100 • Virtex-5 LXT/SXT FF665 Prototyping • AFX-FF665-500 PLATFORM • Platform with Xilinx FPGA $2000 • XtremeDSP Development Platform — Virtex-5 FPGA ML506 Edition with XC5V-SX50T-FFG1136 (288 DSP inside) $1195

  13. FPGA Evaluation Boards AFX-FF1738-500 AFX-FF665-500 ML506

  14. Gproto (Virtex-II) block diagram External PC

  15. Using ML506 it is possible to include the pc inside the FPGA

  16. 300$ 800euro 1100$ 1500euro

  17. This similar project is financed by CSNV Human interface by a browser

  18. Another Virtex-4 solution • Agilent U1083A-003 • Acqiris RVM4400 High-Speed 6U • VME/VXS ADC/DAC Module • 10-bit ADC, 14-bit DAC, 1.2 GS/s • Price ~24 k euro

  19. Conclusion • A new version of iGP @ 12/16 bits should be ready at the begin of next year by DIMTEL, Inc. [but no FPGA source code] • The in-house upgrade of feedback digital processing unit is underway • Different design solutions are available, but it is necessary to know the amount of bunch-by-bunch feedback budget, when it will start and who will pay (SuperB TDR, NTA, CSNV, others...)

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