1. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Status of the OPERA DAQ Status of the OPERA DAQ D.Autiero, J.Marteau T.Descombes  informatics S.Gardien, C.Girerd, C.Guérin  electronics

2. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Ethernet mezzanine: Common part to all sub-detectors (TT, RPC, PT) : the mezzanine is simply plugged on the digital boards (regardless of the standard used : VME for RPC & PT, dedicated board for the TT). Implementation: FPGA (readout sequencer), FIFO (temporary storage),  -processor (with Ethernet transceiver): MCM ETRAX from AXIS with imbedded LINUX. Dimensions: 60mm  60mm, 120 pins for external connections. 3 boards in Lyon. To be done: Preliminary tests (electrical, communication protocols, I/O) to validate the prototype : a dedicated test card is produced locally in Lyon for that purpose. The up-to-date design has been circulated to the Naples group (RPC). Organization of a dedicated meeting in Lyon with RPC & PT representative for the Ethernet mezzanine implementation. Ethernet mezzanine

3. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Ethernet mezzanine

4. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 This board is directly plugged at the output of the analog board (2 flat cables) Its main components are: 1 ADC (12 bits), 1 Ethernet mezzanine (FPGA, FIFO,  -processor), 1 clock receiver unit (EPLD), 1 high voltage module (ISEG), 1 LED pulser (from BERN). Dimensions: 290mm  85mm (see next slide). Connectors: 3 Ethernet RJ45 (2 for the clock, 1 for the signal), 1 power supply (  7V), 1 RS232 (for debug purposes). Dedicated meeting at CERN with the BERN group to review all the components. To be done: Check the mechanics (position of the 2 fixation legs, isolating foam…). Freeze the design a.s.a.p. (tight schedule for the production : deadline January 2004). Produce 1st prototype for the summer (complete R/O chain from PM to DAQ). TT digital board

5. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 HV moduleLED pulser Ethernet mezzanine Analog board Clock EPLDRJ45 conn. We did not implement the Ethernet repeater in this 1 st prototype (cost, # I/O) !!!  we have 3 cables / digital board (clk, data, power supply) TT digital board

6. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 TT digital board Meeting @ CERN between Lyon & Bern : Review of all the parts of the digital board : LAL chips signals, ethernet mezzanine, LED pulser, HV module, clk receiver (fine tuning before freezing the board layout) Choice of all the components: ADC’s for charge R/O & for HV R/O, MUX, DAC’s, hold delay components Definition of the register R/O convention Review of all the signals & connectors from analog  digital board Discussion about the power supply : fuses ? monitoring ? cooling of the boards (temperature measurement with the 2nd ADC) ? Milestones: test with analog board  end of june (Bern also developping charge injector)

7. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 FPGA ADC Ethernet transceiver (BFOOT) RJ45 Conn. NIM outputs BFOOT board EXT trigger PPS signal ADC signal TA trigger

8. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Backup DAQ system for : TT modules tests at IReS & prototype tests : Upgrade of a DAQ board designed for R&D purposes (tested with HPD’s & MaPMT’s) Uses an Ethernet transceiver from Agilent (BFOOT) Adapted to the VA-TA front-end electronics (no gain correction, possible individual thresholds adjustment, dynamic range ~ 200 p.e.) 5 boards received & tested : 2 given to IReS group for the TT modules tests in Strasbourg 2 will be used for tests (‘background measurements’ in Gran Sasso in june) 1 spare We received a connector that could permit to enclose the full electronics inside the TT end-cap (tests to be done soon). BFOOT board

9. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 General features : A common clock is distributed from the GPS master card in the cavern to each node of OPERA : 1.GPS master card  O/E converter : optical link 2.O/E converter  master cards : M-LVDS bus (electrical link) 3.Master cards  node cards (with ETRAX) : M-LVDS bus (electrical link) The signal distribution is provided through M-LVDS bus The system is bi-directional : the returned commands permit : 1.To acknowledge signals reception 2.To measure the propagation time in order to adjust delays node per node Commands are encoded in the clock. The idea is to have a 2 nd secured link from the global DAQ system to each individual node. The commands are : 1.FPGA RESET, 2.ETRAX REBOOT, 3.Time CYCLE INCREMENT (milli-PPS) Clock distribution system

10. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 « Slave » clock in Hall C (receives the GPS signal from the Outside antenna though a 8km optical fiber) O/E converter card Master card 0 Node card i SM2 SM1 PCI card Optical fiber MLVDS Clock distribution system for TT (62 master cards, 992 nodes) 31 Master cards + 1 O/E converter card collected in 1 crate on the top of the detector (+3 additional master cards for the spectrometer) 1 optical fiber from the « slave » card / SM Clock distribution system

11. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 12 boards RPC controller crate PT controller crate 11 boards 11 boards #0#30 16 nodes Optical fiber from slave card O/E converter Master cards Power supply crates #0#15 S.M. top view Ethernet switch Clock & R/O electronics implementation Clock distribution system

12. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Master & node cards : Prototypes have been developped and successfully tested : Communication protocols (tested with more than 20 meters cables between master & node) Choice of serializer/deserializer components (Hotlink) VHDL code (for the ALTERA EPLD) The architecture of the node part has been frozen & implemented in the 1 st version of the TT boards Prototype of master card Prototype of node card Clock distribution system

13. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Master card VME format Clock distribution system

14. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 O/E converter 8 node cards Master card100m optical fibre10m ethernet cable 2m ethernet cable Clock distribution system

15. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Clock distribution system Test of ½ TT plane (8 nodes) : We test an (almost) complete R/O chain :  100m optical fibre  O/E converter  2m ethernet cable  master card  10m ethernet cable  1st node card  2m ethernet cable  2nd node card  … Test measurements : 1.Global propagation time measurement for the physical signal (~5ns / m) 2.Global propagation time including decoding (5  s for the complete loop) 3.Individual node addressing (test of the M-LVDS bus) Last step : interface this test bench with the PCI GPS card

16. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Clock distribution system The O/E converter prototype

17. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 GPS PCI card architecture (« slave » card in Hall C): Receives the GPS clock (we use a standard DATUM 637PCI antenna for tests). Distributes the clock through optical fibres & receives signals from the different nodes (2 lines / SM, no optical splitter). The idea is to design a new slave card using PCI standard with a “collaboration” from the ESAT company who designs the LNGS GPS system. A visit to the ESAT company took place on March, 27 th in Torino. We got many informations on software & hardware aspects: Date pattern decoding Readout ‘triggering’ Oscillator choice Sinus  square signals conversion VHDL code for signal reception The 1 st prototype of PCI board + O/E converter board is under completion. GPS distribution system

18. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Optical fiber from the master clock PLX 9080 APEX 20KE EEPROM Hot Link 923 Hot Link 933 TX1 HFBR1116T RX1 HFBR2116T EPC2 PECL Local bus To the station RX2 HFBR2116T 10Mhz 5.10E-11 OC-050 Vectron Int. Master clock date Optical fiber to the O/E converter of SM1 & SM2 Data+clock mixed Optical fiber From the SM1 Optical fiber From the SM2 Inputs from GPS receiver (pps, 10Mhz, analog Irig B, digital Irig B) O/E Converter Optional for Lab tests TX2 HFBR1116T Propagation time measurement (optional) GPS distribution system

19. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 G.U.I. under JAVA Home page

20. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 G.U.I. under JAVA TT event display of a 5 planes event

21. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 Zoom on the previous event G.U.I. under JAVA

22. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 G.U.I. under JAVA 3D view

23. OPERA GENERAL MEETING Gran Sasso, 19-23 May 2003 ON-LINE software status G.U.I. : Inputs from the various sub-detectors WG (TT, RPC, PT) concerning data taking & acquisition calibration event display CORBA event building : Inputs from RPC & TT WG for the data to be stored (L0 trigger) Inputs from all sub-detectors & from the simulation WG for L1 trigger At present : storage in a relational DB (post-GRES)  adaptation to ORACLE ? Interface with the ROOT developed software ? Network : Simulation of the data rate to measure data transfer time, treatment time on the workstation (sorting & filtering), storage time in the DB Tests are limited to max. 5 ETRAX boards. 10 PC’s (166 MHz PII) have been also used (~3 times more powerful than ETRAX) but the results are difficult to extrapolate.