<title>SIMCON 3.0 eight channel FPGA-based cavity simulator and controller for VUV free-electron laser</title>

Abstract

bunch hunch Laser compressor compressor unduItor photon beam 4Mev 125Mev 380Mev 450MeV ABSTRACTThe work describes integrated system of hardware controller and simulator of superconductive cavity. The controller was realized on FPGA chip Xilinx-VirtexII-V4000. The solution uses DSP EMBEDDED BOARD positioned on a LLRF Modular Control Platform. The algorithm was realized in VHDL using hardware multiplication components existing in VirtexII series of chips. There was obtained implementation of a device working in real-time according to the control condition demands of LLRF system for TESLA superconductive cavities. The system is predicted as a developmental stage for FLASH accelerator and FEL laser and next for XFEL. The paper describes in detail functional layer, parameter programming, control basics for particular blocks, monitoring of real-time processes. There are presented results of system usage for control of the module ACC1 of FLASH laser.

FPGA technology application in a fast measurement and control system for the TESLA superconducting cavity of a FLASH free electron laser

“…(1) SIMCON 1.0 [13] Integrated firmware for field stabilization in the resonant cavities was designed and realized in the form of a parametrized structure of functional blocks in VHDL, which has been described in detail previously [13,14,16]. The FPGA circuit was connected with I ADCs, O DACs and with clock signals synchronizing the work of the field stabilization system with other parts of the FLASH accelerator and laser.…”