1. PT: Its DAQ and Slow-Control Martin Bräuer, Universität Rostock, now DESY Hamburg 1.Time measurement for the PT System Chip Board State 2.The PT Slow-Control Components Software Framework 3.Summary

2. PT geometry tube layer = tubes next to each other module = 48 tubes, 4 layer plane = 16 modules supermodule = 6 planes OPERA = 2 supermodules Defining / counting building blocks …… DAQ: 2 modules = 1 board !

3. The Measurement x y x0x0  x = f (  t ) Measure drift-time !  t < 1µs)  Built a stop-watch and calibrate well Time to Digital Converter  Needs a Start and Stop => Trigger Trigger Signal tt

4. TDC scheme Oszillators = counter Start: (indiv. channel) Latch Oszillator Store reading Stop: (all channel) Latch Oszillator Store reading Compute time-difference callibrate ! Store result till (parallel) readout ASIC made for OPERA Handles 8 channels / chip Ready and accepted

5. TDC Board TDC 1 TDC 2 TDC 12 1 8 96 Interface TDCs / OPERA Mezzanine Clock IF Ethernet IF Input Interface Data-bus START in STOP (trigger) MSC OPERA (Lyon) CLOCK out in ETH Uni Rostock, hardware by MSC (German company) 96 chans (2 PT modules) / board Design defined (MSC & Lyon) Relative simple board TDC chip ready and tested (MSC) 1st eng. sample already in July? => Well on track !

6. Open ends Trigger (present knowledge) : 14KHz Need: 1Message / board / trigger Assume <4 noisy channels (transmit 14 usefull bytes/message)  x2.2 to high (raw) bandwidth !  Reduce trigger-rate  Hardware needed: and or and … ? ? ? Trigger Needs: Simulation (maximise physics) Respect real hardware Not every input-source will work always Dynamic, controlled reconfiguration needed Decision Implementation suggestion And: Time between two (noise) triggers ?? TDC designers assume >1.5 µs

7. SlowCo in OPERA Backbone (Lyon): CORBA = Op-System/Architecture/Language independent Communication-Protokoll  Choose the package to fit your needs best!  Slow-control: Lots of commercial stuff => Windows XP Good experiences in HERA (the maschine!) and HERA-B Existing software (M. Bräuer) High-Voltage Low-Voltage Crates Gas ! Temperature Central control Monitoring? OPERA-clients And: Need something for Uni Hamburg Labs ! ?

8. COPt-framework 1 M. Bräuers hobby: Develop an object-oriented aproach for our control Developed ~OS/compiler independent Seems usefull Will be used outside OPERA Type HV-channel U I U max t ramp HV-board Temperature On/Off State … Ideas: Hierarchy of things Each thing has common behavoiur Interfacing easy (to users to CORBA) HV-channel

9. COPt-framework 2 But: Work in progress !..Which I will deliver..

10. Summary TDCOkay TDC board On the way (MSC &Lyon) looks well TriggerSome work needed by several people SlowControlDefined, Under way Attention: Personal and fully biased Many thanks to all the OPERA people who gave me a chance to work for the project!