ASTA Machine Protection System (MPS) Status and Commissioning Plan ASTA Machine Protection System (MPS) Status and Commissioning Plan Arden Warner Arden Warner, Jin-Yuan Wu, Rich Neswold, Linden Carmichael, John Van-bogaert, Mike Kucera, Ning Liu November 14th, 2014

Installation work and progress 2 List of systems to be installed in the order of priority and status to date:  Laser Pulse Controller (Jinyuan, Arden) Complete but may move to Rack #217  Requires cable for beam permit signal type from MPS to Laser room. ??  FBLM System (most important system for fast shutdown) (Jinyuan, Rich, Arden, Ning) Electronics check completed Device driver tested Digitizer driver tested Integration and Fast shutdown algorithms tested ok  Operations test (i.e resets, delays, timing and scaling etc.) need adjustments – 11/14-18  Checkout with MO signal – 11/14  FBLMs (Darren, Wayne)  Response verification (Wayne) 11/14 Electronic gain Calibration  Main MPS permit system Hardware and initial firmware test complete.  Device driver (Rich) 11/17-21  Movable device input testing (Arden, Jinyuan, Linden)  MPS interface Boards complete (Jinyuan, Arden)  Installation and signal verification (11/24 through 12/5  Signal Providers – Machine inputs  Dump Dipole

Installation work and progress 3 List of systems to be installed in the order of priority and status to date:  Dump Dipole (121) (Paul, Arden) All hardware available (PLC, dim rail mount transducer) Cable from tunnel pulled  Cables to MPS (R217) ( from PLC)  Vacuum ( Tom) mid December reasonable…pushing for next week though??? All cables pulled from tunnel Cables to MPS pulled  PLC logic  Mybus connection  Movable Devices (Mike, Arden Jinyuan) Serial device built and ready to go FPGA Firmware test to decode signal (Jin-yuan, Arden, Linden)  Cable to MPS ……requested, should be quick since its in the same bay of racks  Cross 121 …..agreed with Alex and Randy to lock out rotation degree of freedom for now. We have a couple of sensors available to monitor In/Out. Will use PLC to ACNET  Other Machine sub-systems will be added as we commission  See long input list spreadsheet  Documentation (ALL) We have very good and extensive documentation that we have all been contributing to before building or finalizing components and software. We should decide where to keep it

Commissioning and Integration Plan for 20 Mev Operations 4 We need status information from all relevant subsystems that indicates “ok/not ok” status and in some cases they may need input from the MPS: Input types can be : TTL NIM Contact switches LVDS Commissioning and Integration plan (Mike Church): with beam will be in stages and will require incremental steps Gun - 5 MeV Limit charge, no. of bunches, pulse duration and rate. Laser Pulse controller most important (described ahead): 50 pC: 950 µsec pulse length 1 Hz operation 3.2 nC/bunch: 15 µsec pulse length 1 Hz operation 50 MeV to dump with Capture cavities:  Early stage MPS with relevant subsystem inputs must be available to commission 300 MeV and above to dump with CM  All subsystem inputs must connected

5 (81.25/27) MHz, 5 Hz Machine Timing (81.25/27) MHz Machine Timing Simplified Over-view of MPS Notes: Green arrows indicate where the 3 MHz machine timing is required (bunching frequency). The 5Hz trigger (Machine rep rate) is line locked and most likely provided by Mike Kucera. In principle Mike could also provide the 3 MHz, but I would like to derive a “first bunch” trigger from the laser gate and so I worry about HRM jitter. QE : Laser diode Wall mon (intens.) No. of bunches

( To Photocathode Machine Protection System FPGA based Permit system > Laser Pulse Controller MHz laser ) MHz Pockels CellAmplifierPockels CellAmplifier shutter Beam mode (HI/LO intensity) (81.25/27) MHz (PECL  TTL) Permit signal (intra macro-pulse) (177 timer)  Macro-pulse trigger 5 Hz ( Hz) Control output Block the Pockels cell based pulse kickers as long as the MPS input is in an alarm state. Enforce the limit on the number of bunches as given by the currently selected beam mode. Close the laser shutter on request of the MPS. This may happen when there is no valid operational mode or when some combination of loss monitors exceed thresholds which trigger a dump condition. MPS Laser pulse control Master Oscillator MHz RF (1.3 GHz) to reference Line (1.3 GHz) to LO Distribution Gated 3MHz, jitter <100ps at least, Tunable in the step of 100ps. Arden Warner, FNAL T 0 First bunch trigger (1 st Resistive Wall monitor) Intensity Laser diode Safety Syst MHz (PECL  TTL)

7 Laser Gate and Pulse Control Laser Gate and Pulse Control Laser gate (signal to pockels cells) Max = 1ms T 0 trigger (determines first bunch) w “w” determines no. of bunches Q.E of gun/laser system determined from measured inputs :  Diode (light)  Charge measured (toroid)  number of bunches 3MHz continuous laser (200fs intrinsic jitter) Gate signal Specifications:  < 100 ps jitter  tunable to 100 ps Arden Warner, FNAL

8 Laser Gate and Pulse Control FPGA Board Laser Gate and Pulse Control FPGA Board VME crate 5500 PPC processor (ACNET) control V1495 FPGA board General purpose FPGA Board  64 inputs expandable to 162  32 outputs  405 MHz max for registered logic The FPGA "User" can be programmed "on the fly" via VME, without any external hardware tools, without disconnecting the board from the set up, and without resetting it or turning the crate off. A flash memory on the board stores the programming file, which can be loaded to the FPGA "User" at any moment. Four (independent, digital, programmable, asynchronous, chainable) timers, are available for Gate/Trigger applications. Jin-Yuan Wu, Rich Neswold, Arden Warner

9 LPC Test and Jitter measurements T 0 - First bunch trigger First bunch delay First bunch Jitter measured ~ 32 ps

10 LPC Test and Jitter measurements

11 AMP ADC x2 Log to MPS FPGA LED Driver VME driver SDRAM Timing HV monitor 3 MHz 5 Hz LINK Loss monitor signal processing Loss monitor signal processing PMT Scintillator CAEN HV LED HV VME bus Instrumentation Dept’s Fast digitizer boards

12 FPGA Cyclone III EP3C120F780 VME Drivers 6x32M DDR2 SDRAM JTAG EPCS64 Interface VME bus Oscillator GATE TRIGGER TCLK SYNC IN SYNC OUT External Control Clock Synthesizer CDCE62005 ADCADC ADCADC Pre-Amps 8 Analog Inputs 4 Channels per Chip 8Ch 14bit 125MHz VME/VXS Digitizer A.Semenov Instrumentation Dept 125 MHz Digitizer Instrumentation Dept 125 MHz Digitizer

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May 2014, Wu Jinyuan, Fermilab MPS Logic 14 Block Diagram Any machine status signals in slow TTL or relay contact logic level from vacuum system etc. are converted into LVDS format and sent to input port A and B. (Up to 16 relay, up to 48 relay + TTL). BLM status in 5 MHz TTL pulses are fed into D port. Movable devices status are encoded in serial differential links and are fed into half of the F port. Permits output to laser pulse controller use half of the C port. LEMO TTL outputs from D port are for RF system and test monitor on oscilloscopes. Spare ports allow future expansion. TTL/LVDS CAEN V1495 VME Module Laser Pulse Controller CAEN V1495 VME Module Machine Protection System Permit Generator TTL/LVDS 81 MHz, G0 3 MHz, G1 81 MHz, G0 3 MHz, G1 C00-15 A00-15 C16-31 A00-31 B00-31 Status in TTL or Relay D0-7 BLM 5 MHz LEMO, TTL F00-15 Movable Devices Differential Serial Lines F16-31 LVDS Spare D0-7 LEMO, TTL RF etc.

15 MPS External Components List MPS External Components List BLM Fast prot. (nsec) Result: reduce/inhibit # of signals: 10 (40) BPMS Fast prot. (nsec) result : reduce/inhibit # of signals TPS Fast prot. (nsec) Task : reduce/inhibit # of signals MAGNETS Speed: medium (msec) Type1: Dipole Type2: Quad Result: reduce/inhibit # of signals: COUPLER INTLK Speed: fast Result: reduce/inhibit # of signals: DUMPS (KICKERS) Speed: fast Result: reduce/inhibit # of signala CRYO Speed: slow Result: reduce/Inhibit # of signals: 2 LLRF Speed: fast Result: reduce/inhibit # of signals: KLYSTRON Speed: fast Result: reduce/inhibit # of signals: MODULATORS Speed: fast Result: reduce/inhibit # of signals DIST KICKERS Speed: fast Result: reduce/inhibit # of signals LASER Fast prot. (nsec) Task : reduce/inhibit # ? MOVABLE DEVICES Speed: slow Result: inhibit # of signals (serial link) EMERGENCY OFF Fast prot. (nsec) Task : inhibit # ? SAFETY INTLK Fast prot. (nsec) Task : inhibit # ? VACUUM Speed: slow Result: reduce/inhibit # of signals: 3

MPS Entry Point ( Web Page ) View System Status Drill down to resolve issues Access Needed Applications Display Global information

MPS Components BLMs, Magnets, Laser Pulse Ctrl, etc View of Beam Loss Monitors Capable of analyzing specific loss

Mode Configurations Specify Operational and Beam Modes Enumerate each type of mode

Mode Configurations Show mapping of Operational mode and Gun Mode to needed components