[Halld-jlab] Hall D Staff Meeting Notes, August 11, 2014

[Mark M. Ito]

Folsk,

Please find the notes below and at

https://halldweb1.jlab.org/wiki/index.php/Private:Hall_D_Staff_Meeting,_August_11,_2014 
.

   -- Mark
__________________________________

Present: Eugene Chudakov (chair), Mark Dalton, Alexandre Deur, Hovanes 
Egiyan, Nerses Gevorgyan, Mark Ito, Vanik Kakoyan, David Lawrence, 
Lubomir Pentchev, Carlos Salgado, Elton Smith, Sascha Somov, Simon 
Taylor, Beni Zihlmann

=Announcements (Eugene)=

* we expect a continuing resolution for the first 2.5 months of FY15
** 12 GeV project would benefit from continued funding at FY14 level
* both houses of Congress have proposed increased funding for JLab in FY15
** this could result in more running
* PAC42 results: DIRC A, eta C2
** we have been cautioned that eta may have a higher bar when we come back
* next FY, 150 k$ may be available from the project if we need extra help
** physics budget will have to expand to support activities formerly 
under 12 GeV
* some techs are moving to central group under Amrit
* there will be a annual report on research at the end of the year, 
please send Eugene:
** invited talks given for last 3 years
** names of graduate students for whom you acted as principal thesis 
supervisor or co-supervisor
* pre-review last week, in preparation of ARR on Aug. 26
** focus on beam tuning and commissioning
* ACC schedule left with 6 days to re-install tagger electronics
** we would like short run (a few days) to take detector data before 
this so time can be used to look for problems
** this would start Oct. 3 nominally
* Alexandre will be run coordinator for Oct. commissioning run
** need physics liaison: please send Eugene email if interested in the job
** we will start participating in ACC meetings mid-August
* solenoid cold now, low current testing could start today
* 12 GeV Project: 2 months left
** funds will not carry forward to FY15
** all official procurements finished now
** may need to spend for fixes or replacement, e. g., DAQ computers

=DAQ (David)=

* node freeze problem isolated to certain motherboard types with Ivy 
Bridge or Sandy Bridge CPUs
* AMD and Westmere nodes ran over weekend without incident
** Ivy Bridge node as well, but running secondary event builder
* problem seen in data concentrator and primary event builder (which 
contains data concentrator code)
* farm nodes now being moved to counting house for testing
* looking to procure 3 AMD machines to replace problem nodes
* Sergey Furletov has reported DAQ run at 16 kHz at 50% live
** more investigation of bottleneck to come
* Mark D. reports that multi-event buffered events have been taken and 
parsed (response to question from Beni)

=More DAQ (Sasha)=

* CTP problem
** noticed problem upgrading firmware
** board looked wet, grease coming out from under FPGA radiator
** 4 CTPs removed, pads being replaced
** 1 FADC observed visually with similar problem
** boards have gone to 60 C, limit is 70 C
* problem with fuse blown on master TI
** caps change for two more TIs
* BCAL north crate power supply went bad
** Nick replaced it

=FDC (Lubomir)=

* compressor on chill replaced
** flow seems much lower than expected
** running low voltage despite this
** Bill Crahen looking into it
* using the CDC trigger for now, waiting for the BCAL trigger

=CDC (Beni)=

* top priority debugging noise problem, Fernando back from vacation now

=BCAL (Mark D.)=

* TDC troubleshooting started in earnest
** 2 bad ribbon cables found
** 10 channels not connected
** 10 channels swapped
** these all being corrected now
* only 1 or 2 problems on South now
* time difference from TDCs sensible now
** previously done with ADC timing

=Controls (Hovanes)=

* alarm system to be populated by ARR (response to recommendation from 
pre-review)
** voltages being worked
** Yi Qiang working on solenoid signals
** gas system important
* collimator should never be out of beam (another recommendation)
** can be done by reconfiguration of home limit switch

-- 
Mark M. Ito, Jefferson Lab, marki at jlab.org, (757)269-5295