UA9 September 2010 test beam Si telescope hardware status

1. UA9 September 2010 test beam Si telescope hardware status Mark Raymond – 3/9/10

2. September test beam telescope layout in128 area downstream upstream trigger scintillators XY plane XY planes UV plane XY plane d2 d3 d4 d1 beam 25 cm crystal position • 5 planes altogether (10 silicon strip sensors) • each plane provides 2 co-ordinates: XY or UV • UV plane = XY plane rotated through 450 (resolves ambiguities for multiple hits / trigger) • d1, d4 as large as possible – maybe ~ 7 m? • d2, d3 as small as possible – d2 depends on goniometer layout • unless use same table for gonio and telescope planes? • table height: surface must be nominally 25 cm below beam height – who will look after? • (note: tables for 138 June test were ~ 3 cm too high)

3. UV plane XY plane sensor planes visible (no window yet) crossover area 4 x 4 cm2 25 cm +/- ~ 4cm

4. after optical hybrids installed inside the box analogue opto-hybrids fibres finished

5. cabling, power trigger scintillators XY plane XY planes UV plane XY plane d2 d3 d4 d1 beam 30 analogue readout fibres 5 digital control fibres (clock & trigger) one I2C bus (electrical cable, opto-isolated) I2C hub • to/from counting room • 6 readout fibres per plane => 30 total • 1 control fibre per plane = 5 total • 1 electrical cable to I2C hub in beam area • electrical fanout to each plane • will need some coax cables for trigger,…. • will need 2 mains sockets per plane (LV power, HV supply) • should aim for one multi-socket extension cable per plane (5 total) note: the integrity of these analogue fibres is crucial to the performance of the telescope (the CMS readout system was designed for a one-off, careful installation)

6. summary & plans • we will provide a total of 5 XY planes for the September test (10 Si planes total) • 2 upstream XY, 2 downstream XY, 1 downstream UV • Geoff will bring hardware to CERN Monday 13th • Oz (Osman Zorba) and Mark (Raymond) will check out hardware in 904 (Prevessin lab) • Tuesday/Weds 14th/15th • => available to help with/advise on any cabling installation • hardware to beam area Thursday 16th – telescope commissioning begins • => would like final version of triggering system there at beginning if possible • table height is only other outstanding issue (I can think of at the moment)

7. EXTRA

8. 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)

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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