Agenda

Time/Location

1:30 PM Wed 4-Mar-2009 CC F326

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18-Mar-2009 1:30pm CC F326

Attendees: Elliott W, David L, Mark I, Chris C, Simon T, Jeff W, Eugene C, Beni Z, Fernando B, Alex S, Dave D, Elton S, Dave A.

FADC125

Gerard called in to give a status report on FADC125 development.

Layout and routing in progress, still much to do.
Some components still need to be added, some minor circuits still to be designed.
Back-end mostly done.
Entire board will be hand-routed, needed due to density, complexity, grounding requirements, and proximity of analog and digital components.
Mezzanine card not started, but mostly a copy of what's underneath.
All important circuits have been prototyped.
Power usage mostly independent of signal rate and amplitude.
Will have an informal internal design review after first prototype tested.
Three prototypes will be constructed, should be available in early May. One month of design to go, one month to fabricate.
Prototype should suffice for summer FDC and CDC tests.

Controls Update

See Elliott's slides for many details.

Installation and testing of EPICS base plus a few extensions took two to three days of effort.
Development of a custom application including archiving, alarming, and stripcharts took four to five days of effort.
Used default ALH and striptool, and new JLab Accelerator archiver.
This test application has been running continuously for about three weeks now.
Next step is to connect to real device.
Need to test new alarm system and archiver from SNS.
Elliott developed a new way to link functions from dynamic libraries (.so files) into EPICS applications, should appear in future release of EPICS.
JLab has Labview site license for Linux, Windows, and Mac. Important question is: What role might Labview play in Hall D?
General agreement that Labview is fine for bench testing and for expert control systems. The only issue concerns what shift personnel have to work with.
Connectivity of Labview to EPICS channel access needs to be understood. Apparently works from Windows, not clear about Linux. Elliott will find out.
Linux Labview available on CUE system.
Elliott will pursue this.

Other Electronics Status

Chris gave a brief overview of recent progress. See Electronics Wiki for details.

CTP working on 21-slot VXS crate.
SD board had some vendor problems, being resolved.
Paper for Beijing RealTime conference being prepared. Concerns time syncronization of two-crate system separated by 150 m of cable.
Switched to new ECAD system (Altium), more powerful than old system.
New 16-channel discriminator board developed for Hall B. Presentation to be given in future Online meeting by Ben.