1. The ALICE Silicon Pixel Detector Control system and Online Calibration tools Ivan Amos Calì (a,b) ivan.amos.cali@cern.ch On behalf of the SPD Project in the ALICE Collaboration 12th Workshop on Electronics for LHC and Future Experiments Valencia, Spain, 25 – 29 September 2006 (a) Dipartimento di Fisica e Sez. INFN di Bari, I-70126, Bari, Italy (b) CERN - European Organization for Nuclear Research, CH-1211Geneva 23, Switzerland

2. LECC06, 27 September 2006Ivan Amos Calì 2 Outlook ALICE Silicon Pixel Detector (SPD) structure Detector Control System overview SPD Online calibration scenarios Detector commissioning at the Divisional Silicon Facility (DSF) at CERN and software benchmark Summary

3. LECC06, 27 September 2006Ivan Amos Calì 3 Inner Tracking System (ITS) Strips Silicon Drift Pixels ITS

4. LECC06, 27 September 2006Ivan Amos Calì 4 SPD - Silicon Pixel Detector Number of pixel: ~10 M Total material budget <1% X 0 per layer Operating temperature: 25°C Cooling: C 4 F 10 (evaporative) Power consumption:~1.5kW 2 barrel layers 10 sectors Total surface: ~0.24m 2 Δz= 28.3 cm r= 3.9 cm & 7.6 cm Beampipe-SPD: at ~ 5mm Charged particle multiplicities up to 8000/η and expected occupancy <2% (central Pb-Pb)

5. LECC06, 27 September 2006Ivan Amos Calì 5 SPD Readout and Control System Pixel bus Routers Triggers (L1, L2y, L2n, testpulse), jtag Counting room el.Pilot MCM control transmit pilot Opt. link Pixel chip 0 Pixel chip 9 reference voltages data receiver G-link GOL link receiver daughter card ALICE DAQ, Trigger & DCS ON DETECTOR EL. OFF DETECTOR EL. Opt. links 1200 Readout Chips 240 Sensors 120 Pilot MCMs 120 Half Staves (HS) 60 Link Receiver Cards 20 Router Cards

6. LECC06, 27 September 2006Ivan Amos Calì 6 SPD R/O & Services Optical VME Ethernet Software Hardware 1 x Interlock & Temperature Monitoring PLC PVSS Interlock control PVSS PS control 4 x CAEN Easy3000 crates (tot. 20 x A3009B 12 ch. LV Modules) 1 x CAEN Mainframe SY1527 (1 x A1676 Branch Controller & 10 x A1519B 12 ch. HV Modules) 1 x Cooling Plant (10 cooling lines) 1 x Cooling PLC PVSS Cooling Control The data stream is forwarded to the FED Servers during the SPD calibration PVSS FED control 20 x SPD Routers (3 x LinkRxs each) 2 x FED Servers The Pixel Trigger System must be integrated in the SPD control structure

7. LECC06, 27 September 2006Ivan Amos Calì 7 SPD Finite State Machine Hierarchy SPD DCS Infra FED Power HVLV Cooling LV (HSn) 0-1 HV (HSn) Sector0-9 HSect.0-1 HS0-5 FED (HSn) Cooling (Sect n) HSnPowerInterlock State Management Interface ++ (SMI++) based The 1 st level of safety is provided by PVSS background scripts 31 Control Units 245 Logical Units 625 Device Units 5 Working Node and 5 independent PVSS projects DU CU LU

8. LECC06, 27 September 2006Ivan Amos Calì 8 SPD DCS Capability I Automatic HSs power-up and power-down sequence Control, monitor and archive of the 240 LV & 120 HV channels voltages and currents Readout of 250 temperature monitor chains Configuration of the on-detector & off-detector electronics (run type dependent: i.e. PHYSICS, CALIBRATION, BEAM TUNING, etc. ) Data synchronization monitor Self-diagnostic capability of the system (H/W & S/W)

9. LECC06, 27 September 2006Ivan Amos Calì 9 SPD DCS Capability II Detector calibration and automatic operational parameters fine tuning Automatic online calibration data analysis Configuration and Condition (offline) DB interconnection The SPD DCS is capable to emulate the ALICE DAQ and Trigger system during specialized calibration runs

10. LECC06, 27 September 2006Ivan Amos Calì 10 Interlocks T interlock Routers (HSectors, Pt1000) T interlock PLC (HSectors, Pt1000) Cooling line T sensors (Sectors, Pt1000) Cooling plant (General Alarm) SPD Interlock Card (combinatory logic) 1 20 10 20 LV Modules (HSector granularity) Software interlocks Sensors leakage currents trends Temperature trends (Routers & Interlock PLC)

11. LECC06, 27 September 2006Ivan Amos Calì 11 SPD calibration parameters – Pixel matrix uniformity and efficiency of response – Noisy and dead pixels identification – DACs fine tuning – Minimum and Mean threshold scans – References voltages parameterization

12. LECC06, 27 September 2006Ivan Amos Calì 12 RO Electronics Data & Ctl Optical VME Ethernet (DIM) PVSS Archives PVSS FED control Comm.& Status Data Config. DB FED Servers (x2) FED Servers (x2) FED Servers (x2) FED Servers (x2) FED Servers (x2) Online Analysis Tool (ROOT based) Condition DB DCS Exchange FS DCS network To Permanent Data Storage (PDS) General purpose network SPD Calibration Scenario 1 DCS Standalone emulate Alice Trigger and DAQ system Run number provided by Experiment Control System (ECS) for synchronization

13. LECC06, 27 September 2006Ivan Amos Calì 13 ALICE DAQ SPD Calibration Scenario 2 Control Data Optical VME Ethernet (DIM) PVSS FED control Comm.& Status Config. DB FED Servers (x2) FED Servers (x2) FED Servers (x2) FED Servers (x2) FED Servers (x2) Condition DB DAQ Exchange FS Extra data header produced inside the routers to delivery information to the analysis scripts DCS emulate Alice trigger system RO Electronics Monitoring Programs (MOOD & Calib. Data Displ) Local Data Collector (LDC) Analysis Scripts0 DCS network To Permanent Data Storage (PDS) DAQ network

14. LECC06, 27 September 2006Ivan Amos Calì 14 DSF “Control Room” 2 FED Servers PS control Cooling ControlAnalysis tool & Interlock, T monitor system FED control

15. LECC06, 27 September 2006Ivan Amos Calì 15 Trigger and DAQ setup at DSF Trigger Crate Routers Crates 2 LDC equipped with 10 D-RORCs Software: – DATE v5.14 – ECS v2.8

16. LECC06, 27 September 2006Ivan Amos Calì 16 SPD sectors and services in DSF SPD Sectors Power Supply System Cooling System

17. LECC06, 27 September 2006Ivan Amos Calì 17 Experiment Control System Integration SPD FSM top node integrated in the ECS PCA States and action recognized by ECS Calibration structure tested A series of calibration runs have been developed using SPD sectors.

18. LECC06, 27 September 2006Ivan Amos Calì 18 Summary The Detector Control System is operative and is used for the sectors characterization at the DSF The automatic calibration procedures have been prototyped and benchmarked at the DSF DCS integration in the ALICE framework is undergoing The detector integration and commissioning is ongoing at the DSF

19. LECC06, 27 September 2006Ivan Amos Calì 19 BACKUP

20. LECC06, 27 September 2006Ivan Amos Calì 20 Uniformity scans using DAQ Displayer: MOOD

21. LECC06, 27 September 2006Ivan Amos Calì 21 HS Test sequence

22. LECC06, 27 September 2006Ivan Amos Calì 22 SPD FSM Top Node OFF STANDBY {mode} READY PHYSIC Startup{ mode} standby_ physic go_physic shutdown set_mode {mode} CALIBRATION {cal_mode} Standby_calibration go_calibration{cal_mode, run_n} cal_mode: Minimum TH Scan – (DCS_ONLY_MIN_TH_SCAN) – (DAQ_MIN_TH_SCAN) Mean TH Scan – (DCS_ONLY_MEAN_TH_SCAN) – (DAQ_MEAN_TH_SCAN) Uniformity Matrix Scan – (DCS_ONLY_UNIFORMITY_SCAN) – (DAQ_UNIFORMITY_SCAN) Noisy pixels – (DCS_ONLY_NOISY_PIX_SCAN) – (DAQ_NOISY_PIX_SCAN) mode: – PHYSICS – CALIBRATION – MCM_ONLY – BEAM_TUNING run_n is the run number provided by the ECS in case of DCS_ONLY calibration runs

23. LECC06, 27 September 2006Ivan Amos Calì 23 Glossary ECS: Experiment Control System DCS: Detector Control System FED: Front End Device FERO: Front End ReadOut Electronics PCA: Partition Control Agent ECA: Experiment Control Agent DIM: Data Interschange manager

24. LECC06, 27 September 2006Ivan Amos Calì 24 SPD DCS III HS cooling HS FED

25. LECC06, 27 September 2006Ivan Amos Calì 25

26. LECC06, 27 September 2006Ivan Amos Calì 26 Cooling System II

27. LECC06, 27 September 2006Ivan Amos Calì 27 FED PVSS Layer II

28. LECC06, 27 September 2006Ivan Amos Calì 28 Analysis tool Interface to PVSS and FED server fully operative Uniformity of response and noisy scans analysis operative Results recorded to files