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UA9 telescope first ideas Rome – 12/3/2010 Mark Raymond – m.raymond@imperial.ac.uk

UA9 telescope first ideas Rome – 12/3/2010 Mark Raymond – m.raymond@imperial.ac.uk. CMS LHC Si strip readout system. CMS FED (9U VME). APVMUX. APV. analog opto-hybrid. ~100m. lasers. inner barrel sensor. 96. 12. laser driver. x15,000. analog optical receivers. analogue readout.

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UA9 telescope first ideas Rome – 12/3/2010 Mark Raymond – m.raymond@imperial.ac.uk

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  1. UA9 telescope first ideas Rome – 12/3/2010 Mark Raymond – m.raymond@imperial.ac.uk

  2. CMS LHC Si strip readout system CMS FED (9U VME) APVMUX APV analog opto-hybrid ~100m lasers inner barrel sensor 96 12 laser driver x15,000 analog optical receivers analogue readout APV25 0.25 mm CMOS FE chip APV outputs analog samples @ 20 Ms/s APVMUX multiplexes 2 APVs onto 1 line @ 40 MHz Laser Driver modulates laser current to drive optical link @ 40 Ms/s / fibre O/E conversion on FED and digitization @ ~ 9 bits (effective)

  3. pipeline 128x192 APSP + 128:1 MUX 128 x preamp/shaper 7.1mm control logic bias gen. FIFO pipe logic CAL 8.1 mm APV25 128 channel chip for AC coupled sensors slow 50 nsec. CR-RC front end amplifier 192 cell deep pipeline (allows up to 4 msec latency + locations to buffer data awaiting readout) peak/deconvolution pipeline readout modes peak mode -> 1 sample -> normal CR-RC pulse shape deconvolution -> 3 consecutive samples combined to give single bunch crossing resolution Decon. Peak noise 270 + 38 e/pF (peak) 430 + 61 e/pF (deconvolution) note: only discrete 25nsec samples of above shapes are available in asynch. test beam choose timing to get close to top of peak mode pulse shape

  4. APV O/P Frame digital header 128 analogue samples APV readout trigger FED VME ~ 10 MB/s readout analog opto-link Slink to CMS DAQ APV provides a timeslice of information from all 128 input channels following external trigger (trigger must be timed-in correctly) no zero-suppression (sparsification) on detector • pedestal, CM subtraction and zero suppression on FED • raw data also available for setup, performance monitoring • and fault diagnosis • can read out raw data at low rate – VME - < 1 kHz • can read out sparsified data faster – VME ~ 10 kHz • (to be verified – some uncertainty here) • Slink faster – 100 kHz – but needs incorporation (and • customized use) of other CMS components • (probably not possible this year) 20 Ms/s readout -> 7 ms

  5. off-detector FED functionality • opto-electric conversion • 10 bit 40 MHz digitization • pedestal and CM subtraction • hit finding (sparsification) • formatting and transmission of data • up to higher DAQ level • check of APV synchronization • all tracker synchronous, so all pipeline • addresses of all APVs should be • the same • FED checks received APV pipe address • matches with expected value • (APV logic emulated at trigger level) 9U VME

  6. UA9 telescope readout system APVMUX CMS FED (9U VME) APV analog opto-hybrid ~100m lasers inner barrel sensor 96 12 laser driver PA make use of most components but different sensors – no PA readout fibre ribbons plug straight into FED

  7. HV, LV I2C, RST Ck/T1 telescope sensor module ceramic piece (same thickness as hybrid) ceramic hybrid D0 sensor 60 um pitch (+ intermediate strip) ~ 8 um resolution AOH Al support plate with cutout beneath sensor peltier heatsink fan

  8. HV, LV I2C, RST Ck/T1 HV, LV I2C, RST Ck/T1 sensor AOH XY plane sensor AOH crossover area ~ 4 x 4 cm2 interface circuitry optical fibre adaptors power supply conditioning peltier cooling control ….. power slow control fast control (40 MHz ck, trigger) fibre ribbon readout

  9. XY plane box (light tight) 250 mm 250 mm ~50 mm baseplate (dimensions not critical) adjustable feet for levelling

  10. XY plane XY plane XY plane XY plane few 10’s m ~ m ~ m LV/HV power supplies not included here note: will need trigger to initiate APV readout (who will provide?) • I2C: 1 bus per plane • actively split inside plane module • also opto-isolated • Ck/T1: 1 shielded pair per plane • CK/T1 combination at VME end • (separate module) • 1 fibre ribbon (50% utilised) per plane VI2C SeqSi TTCex TTCvi crate controller 9U/6U VME FED

  11. software • first thoughts - not my area of expertise • will need: • setup • lots of programmable parameters in CMS readout system • bias levels, modes of operation, timing offsets (synchronize to beam trigger), … • run control • well behaved start/stop • look after data storage, format? • prompt data analysis “online” (provide feedback to setup) • beam profile, signal amplitude histos, …. • offline • what is required?

  12. I2C link 5V 5V 5V 2.5V 5V 2.5V ~ 10’s m buffer buffer opto- isolate I2C de-mux level shift 1st APV/opto hybrid VI2C level shift 2nd APV/opto hybrid VME (1 channel) ancilliary I2C circuits separate VME buffer module (4 chan – can also incorporate Ck/T1 opto-buffering) within front end XY plane enclosure level shift resets Ck/T1 link ~ 10’s m Ck Ck/T1 combine 1st APV/opto hybrid SeqSi opto-buffer opto-receiver 2nd APV/opto hybrid T1 fibre-optic 1st APV/opto hybrid opto-buffer opto-receiver 2nd APV/opto hybrid 1st APV/opto hybrid opto-buffer opto-receiver 2nd APV/opto hybrid 1st APV/opto hybrid opto-buffer opto-receiver 2nd APV/opto hybrid

  13. Optical rail system up to 2 m 50 mm 80 mm X48 system from www.newport.com assume this will sit on stable table (provided by someone else) feet allow some adjustment for levelling will still need some other mechanism for overall height

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