Intermediate Readout-System for Si detectors Haik Simon • GSI Darmstadt

1. Intermediate Readout-System for Si detectorsHaik Simon • GSI Darmstadt • Scope • Boundary conditions • Idea for a Frontend • Summary

2. Triggered vs. non triggered readout • smooth transition from existing systems • triggered systems will be replaced whenever they cause excessive dead time or • … are difficult to handle • Examples: (1) incoming tracker (deadtime) • (2) calorimeter (several 1’000-100’000 channels) • (3) delayed coincidences • … so don’t forcefully leave out trigger capabilities • and don’t force triggers to be there H. Simon ● R³B/EXL/ELISe 04/10

3. EXL from RESR • distributed setup • 300’000 ch Si (DSSD), Si(Li), CsI shell H. Simon ● R³B/EXL/ELISe 04/10

4. Rate estimate: Discussion needed ! aka Physics Input (example EXL) • Assumption 50 (?) kHz event rate, maybe 1000 (?) Si channels firing (real physics + bg (?) i.e. 10% occupancy), time stamp and ADC value (ca. 10 Bytes)  500 MBytes/sec digital information  compatible with fibres • Dito but no ADC inside  (i) 50 Mio analog values/sec to be multiplexed outside (ii) associated timestamps (i.e. 350 MBytes/sec)compatible with a few fibres • EXL: Don‘t forget Göran Thungstöm/Lars Westerberg H. Simon ● R³B/EXL/ELISe 04/10

5. Ian Lazarus Si Ladder ASIC R3B conceptual design for Si tracker FEE and DAQ Draft 1 April 2008 DSSD ASIC NUSTAR DABC DAQ FEE Card Handles 16 ASICs, each 64ch = 1024ch. Total approx 100 FEE cards Gbit Ethernet fibre(s) R3B input code module Slow Control Fibre Ethernet either fibre or HDMI links BUTIS BUTIS Fan-out fibre links H. Simon ● R³B/EXL/ELISe 04/10

6. GUI Asynchronous DABC:e.g. Network event building for MBS N. Kurz, J. Hofmann, W. Ott Linux PCs lxi011 LynxOS lxi012 TCP MBS frontend input eventbuilder x86-7 sender MBS frontend x86g-4 DIM, Java GE lxg0517 lxi014 lxi013 Event generator sender eventbuilder controller TCP input No common trigger for demo H. Essel, J. Adamczewski, S. Linev • DABC structure GE: Gigabit Ethernet

7. DSSD ~100 µm SiLi 6.5mm Beam DSSD 300 µm CsI 200 mm  NUSTAR synergies:Common Demonstrator Layout R³B, EXL, … . First DSSD – e.g. 2.1 x 2.1 cm2, 0.3/1.25 mm pitch (PTI, EXL) or 0.1/0.1 mm pitch R³B Second DSSD – e.g 5.2 x 6.7 cm2, 0.1/0.2 mm pitch (Micron, EXL) or 0.1/0.1 mm pitch R³B Si(Li) or Si – e.g. 9 x 5 cm2, 4 x 2 pads ---- EXL CsI – e.g. volume 3 x 3 cm2 x 20 cm H. Simon ● R³B/EXL/ELISe 04/10

8. Purpose of the R³B/EXL Demonstrators – Topics to be Investigated and Questions to be Solved Detection of MIP`s with thin DSSD`s Tracking with high resolution Performance of CsI in combination with Si detectors Energy and position resolution for protons, alphas for various energies Performance of DSSD`s with larger pitch size ( from 0.3-1.5 mm ) Very low threshold detection PSA Combination of DSSD`s with Si(Li)`s Vacuum compatibility Heat production Feedthroughs Noise Analysis Evaluation of realistic background conditions  Self Calibration and Monitoring ASIC specifications #ch.: ~1000, frontend in(high)vacuum (for EXL: bakeable to at least 150 ºC) trigger: external trigger  self triggerable dynamic range: 150 keV – 5 MeV ( in Si(Li) up to 100 MeV) data rate: 1-10 kHz H. Simon ● R³B/EXL/ELISe 04/10

9. ROC ROC ROC s u B t u o d a e R Token Ring Scheme (NXYTER) “deadtime free”/no trigger out Ch. Schmidt (GSI) Sparse & derandomized readout • Periodic readout at 20MHz • Token asynchronously passes from channel to channel in search of data • Within one readout cycle token could pass through all channels • If token encounters occupied channels, data readout is initiated. • After readout the token passes to the next channel. • 20 MHz/128 Ch ≈ 160 kHz ENOB 10.4 ROC Token Timestamp Threshold Manager Ulrich Trunk Physikalisches Institut der Universität Heidelberg H. Simon ● R³B/EXL/ELISe 04/10

10. Si FEE conclusion • For “plain” readout we should develop a boardbased on the VA32TA2 (negotiations in progress) • Problems with power consumption • PSD requires sampling electronics Intergration via EXPLODER (Kurz/Hoffmann/Ott) LVDS Fibre H. Simon ● R³B/EXL/ELISe 04/10

11. Proton recoil/Ion detection in vacuum Front of the SSD (thickness 300µm) 41 × 72 mm2 , strip pitch 100mm Dynamic range – 100 keV - 14 MeV Resolution 50keV for 5.5MeV alphas • FEE • AMS(-02) readout: • e.g. NIM A 439 (2000) 53 • 6+10 read out 2*5(320) + 6(384) • VA_hdr.AMS64 resp. 9a chips • IDEAS/Norway FEE: < 3W / detector • SIDEREM (GSI/EE) • NO self trigger/ calib. pulser ! H. Simon ● R³B/EXL/ELISe 04/10 H. Simon ● NUSTAR DAQ around X-mas

12. SIlicon Strip DEtector REadout Module (SIDEREM) J. Hofmann, W. Ott, N.Kurz (GSI) VA_S1 320 ch S HCC VA_S2 320 ch VA_K 384 ch K HCC 12 Bit ADC ca. 80 ms readout time (5MHz) DSP TMS320VC6414 (TI) FPGA Virtex-4 LX25 (Xilinx) H. Simon ● R³B/EXL/ELISe 04/10 H. Simon ● NUSTAR DAQ around X-mas

13. Alternatives ? • VA32TA2 solves • several problems but “Jülich • system is too specialized” • MUST2: 30mW/channel !!! • & less sensitivity (but ok for thick detectors) •  Eric Delagnes DAPNIA/CEA H. Simon ● R³B/EXL/ELISe 04/10

14. Typical # channels … • 32x32 channels • We go for 128 channels … H. Simon ● R³B/EXL/ELISe 04/10

15. System design M. Holl TUDA „Analog Board“ V551 or SIDEREM AC coupled readoutDC coupled Commercial FGA test board (for playing …) H. Simon ● R³B/EXL/ELISe 04/10

16. Timing to be generated … and summary M. Holl TUDA • „sparse“ readout by not reading all chips i.e. 1 out of 4 in this example • 32strips with 5MHz • interface to rest of DAQ • characterisation of Trigger Pulses i.e. hit mult. • and timing… • Verstile frontend with low • power consumption ! H. Simon ● R³B/EXL/ELISe 04/10

17. XYTER as candidate system for Si readout EXLSilicon Particle Array R3B Calorimeter with inner tracker • 100µm / 300µm DSSD 100µm / 500µm * 5mm pitch • p,d,t,a recoils “0”-~1GeV (stopped ca. 5MeV … MIPS) • R³B just hit info (threshold DE ~ 50keV) ~ 10’000 ch. • EXL particle spectroscopy (∆E = 30 keV FWHM) ~100’000 ch. only 1..10 hits/event, @0.1Hz..10kHz ! H. Simon ● R³B/EXL/ELISe 04/10 H. Simon ● NUSTAR DAQ around X-mas

18. R3B Si Tracker ASIC Proposal Shaper Pk Hold Mux PreAmp TFA Discr. • ASIC features: • Time Stamp • Zero Suppress • On chip ADC x64 Shaper Pk Hold PreAmp TFA Discr. Time Stamp Control ADC 12 bit 1MHz Buffer and Serial Readout Ian Lazarus

19. Detector system synergies … •  Gaspard • Paris (LaBr3 , …) • FAZIA (PSD cap. Si,…) • S³ instrumentation • … H. Simon ● R³B/EXL/ELISe 04/10 H. Simon ● NUSTAR DAQ around X-mas

20. Online pulse shape analysis Example: L. Bardelli 100 MS/s / 12Bit Mutterer et al IEEE TNS 47 (2000) 756 L.Bardelli et al: NP A746 (2004) 272 H. Simon ● R³B/EXL/ELISe 04/10

21. Specialized Frontends (i) APV Frontend -- M. Böhmer, TUM • APV25-S1 RAL •  CMS (Si, …) • (128 channel analogue pipeline • 192 columns analogue storage. • 50 ns shaped pulses • 100mV / 25,000 electrons • 40MHz sample • Useful data marked • test pulser, pos/neg, …) • I²C control • Clck, Trg • Low power consumption • Readout board • (ADC + FPGA exists GTB/Fiber) H. Simon ● R³B/EXL/ELISe 04/10

22. Integration chain within MBS (in hardware) Timestamps (TITRIS) FE Trigger Distribution (TRIDI) Logics Scaler/Downscale Deadtime locking Soft triggers (VULOM) Trigger Module (TRIVA) GTB FE data transfer (Cu/LWL) and Processing H. Simon ● R³B/EXL/ELISe 04/10