OWG meeting 27-Jun-2008

Agenda

• Announcements
• Suggestion for Hall D online farm from Chip Watson - Elke
• Review of minutes from 13-Jun-2008 meeting
• Fiber test stand status - Beni, Elliott
• Electronics status - Chris

Time/Location

1pm Fri 27-Jun-2008 CC F326

Next Meeting

11-Jul-2008 1pm CC F326

Minutes

Attendees: Elliott W, Dave L, Simon T, Beni Z, Elke A, Jim S, Mark I, Chris C

Online Farm in Computer Center

Chip suggested to Elke that Hall D consider locating the online farm in the computer center.

• Would use regular JLab farm nodes.
• CC would take care of maintenance, repair, configuration, etc.
• When H-D not running nodes could be used for something else (e.g. H-D monte carlo).
• Would need > 3 GB/s bandwidth between counting house and CC.
• No advantage if online farm is small, only if it is large.
• Will discuss this at future meeting after DAQ group and others have a chance to think about it.

Fiber Test Stand

• Everything is working now: trigger, readout electronics, DAQ.
• Have tested trigger up to 10 kHz, no problems.
• Beni needs to figure out how to hook up and use the stepper motor and controller.
• Light box components on order.
• We have spares for everything except the CAEN V792 ADC. During production fiber testing we