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Specifications and Meeting Notes for SPS Syncrotron Telescope Software Development

This document outlines the specifications and notes from the meeting regarding the SPS Syncrotron Telescope software. Key features include a timing frequency of 1kHz (or 40MHz) with 25ns bunch spacing, enabling up to 288 proton bunches for LHC injection. Camera acquisition rates and synchronization with events are discussed, including programmable delays and operation modes. Discussion on gain control, position control, and the necessary hardware for the system strengthens expectations for effective image acquisition and analysis. Action items and participant roles are also defined.

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Specifications and Meeting Notes for SPS Syncrotron Telescope Software Development

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  1. SPS SyncrotronTelescope Software specifications Notes following the meeting Aurélie GoldblattBE-BI-PM 21.03.2014

  2. SPS properties • Period: 23 us • Timing 1kHz (or 40MHz) • 25ns bunch spacing => 40MHz • Number of 25ns buckets: 924 • Max number of proton bunches: 4x72 =288 (intensity limitation, only for LHC injection?). 225 ns spacing between batches • Flat top = 1.2s (to be confirmed) • Fix target beam has more bunches with less intensity per bunch (and goes only to 400GeV) ? • Coastrun: no rampstart

  3. Camera Analog intensified and gated camera Proxitronic (LHC BSRT camera) Acquisition rate = 50Hz Through MTV, depends of image size (digitalization and acq: ~350ns/pixel) => from 3-4 Hz to 16Hz Expected acquisition: between 4 and 10 bunches per fillin bunch mode (if only measurable at flat top) • Acq Start: programmable delayafter «Ramp Start» event (or otherevent for coastruns=> Lars) • Acq Stop: «Flat top End» event • Acq. synchronizedwith trigger (rate set conservatively, ie for full image acq, then rate increased if possible) • All images released at the end of the cycle (≠ BSRT LHC) • Camera Acquisition (MTV) • Camera ON/OFF (TTL VMOD)

  4. Gate Control: (DAB, BOBR, TTL VMOD) Two modes: - Bunch Scan: 25ns gate synchronous with timing machine - DC : gate opened Bunch Scan mode: • Gate synchronized with selected bucket: 12.5 ns delay steps, DAB card synchronised with the BST (BOBR) • Bunch selection from a bunch list entered manually, length = 100 • Acqstart at the beginning of the list for each cycle Listsexamples:

  5. Gain and Position Gain Control:(DAC VMOD , MIDI) • Filters: Set manually between cycles • Camera gain: g=α ·VEwhere: • VE is a vectorwith values corresponding to time slots from «Ramp Start» to «Flat top End» events (iecorresponding to energy, sinceeach time slot corresponds to a specificenergy) • αis a scalar to set manually (in function of bunchintensity) Position Control: (MIDI) Set the steeringmotorsmanually. No feedback.

  6. Motors Control (MIDI) BSR • Steering mirror H • Steering mirror V • Filter wheel (pneumatic if possible) • Camera translation stage If LDM: • 2 filter wheels • TS X • TS Y • In/out beam splitter Cardneeded: RS232 mezzanine (VME to MIDI)

  7. Display At the end of the cycle, display all storedacq: • Image • H&V profiles with fit • Sigma ** • Position • Intensity **Corrected H&V sigma: where M from calibration and c from wire scanners (?) Remark: no emittance extrapolation, only sigma data for beginning. Display tools: • Area selection, cross cut selection => modify the profiles • BW/WB/Color • Save/clear/subtract ref image • Zoom • Marker • Cursors • Grid • Save Analog signal to CCC

  8. Actions Meeting participants: • Federico Roncarolo • Enrico Bravin • Georges Trad • Lars Jensen • Guillaume Baud • Ana Guerrero Ollacarizqueta • Aurélie Goldblatt To do: • Guillaume is in charge of the soft • Lars will propose a solution for startacqevent (compatible withcoastrun) • Aurélie willprovide to Lars the list of the cards to order to CO

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