Minutes of the T2UK face-to-face meeting

UCL, Tuesday 9th Oct., 2007

*MINUTES STILL BEING WRITTEN *

(Meeting organized by RHUL but met at UCL)

Present: Manchester: Stefan Ask, Paul Bell, Simon Head, Jiri Masik. RAL: John Baines, Dmitry Emelyianov, Fred Wickens, Monika Wielers. RHUL: Antonella De Santo, Simon George, Barry Green, Pedro Teixeira-Dias (minutes). UCL: Mario Campanelli, Cathrin Bernius, Gordon Crone, Nikos Konstantinidis, Erkcan Ozcan, Mark Sutton.

Apologies: None.

News

LHC schedule: there was a presentation by Lyn Evans today. He reported on delays due to the Liquid He transport and storage, as well as on the "plug-in modules". At the moment no changes to the schedule (first collisions in July 2008) are foreseen.

The new TDAQ structure (TDMT: Livio Mapelli and Chris Bee; and Nick Ellis as overall Trigger project coordinator) has now been operational for several months. It seems to be working well.

Work packages - progress over the last 6 months and forward look

WP1: ROS hardware and software

ROBins

Fred, Barry

2 boards had soldering issues. 8 problem boards so far. Repairs attempted on all 8 (2 last week only). 3 out of 6 with PLX repair are now fully working and operational at CERN. Out of the 8 boards whose PLX were removed, 3 are now OK, possibly 4. Problem not getting any worse, no new failures of the same type recently.

Reuse of old PLX/FPGA: not clear this will work; need to re-ball the Ball Grid Array, and CemGraft has counselled against this.

Final German production (additional 70 boards) was finished end of August.

Next TDAQ release tdaq-01-09 will incorporate a CRC checksum that will be attempted on a fraction of the data, to detect any data corruption problems in the ROBin.

ROS software

Gordon

tdaq-01-08.03 now installed in P1. Will be used in the next commissioning run. Changed the way information is reported to IS, towards OMD (Operational Monitoring Display). tdaq-01-08.03 also includes the CRC checksum.

ROS operational monitoring

e.g., identify hot ROSs; OMD functionality still not what is required, but this is expected to improve in the future. General support to detectors, commissioning ROSs. The majority of ROSs already commissioned with detectors: all of the calorimeters (LAR alone is more than 50% of all ROSs).

So far with LAr have achieved 50kHz readout rate, still short of the 75kHZ (to be investigated with M5, then M6 when SCT is installed). Tests with very high data request rates (out of the ROBin) have been successfully achieved.

WP2: HLT farm and networks

WP3: HLT software

-- PedroTeixeiraDias - 09 Oct 2007