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September 23, 2009 online meeting minutes

2009-09-23T15:03:12Z

129.57.80.194:

present: Sergey Boyarinov, Sergey Pozdnyakov, Stepan Stepanyan

1. Next run preparations:

* BONUS readout: 3 PCs with Linux, 3 TI PCI cards, 3 RORCs, 6 crates, 26 FEC cards; new PCs will be installed on North SF, probably in DCHV rack on the floor; they will be connected to the branch instead of tage, tage2 and tage3; need 2 new TI PCI cards, and a lot of electronics still coming from Italy, and 3 DELL PCs still to be delivered; software for CODA readout was adjusted by Sergey B. from CERN test program, some issues still to be fixed (we are loading firmware in every prestart to make it work); we are testing BONUS in ELL building until Sep 28, then it will be moved to the Hall

* it will be external trigger for BONUS, need to find empty TS input, maybe instead of TOF, probably 2 signals

* hodoscope will be installed, electronics/readout is still there

* Friday Oct 2 everything must be ready for the beam

* need to improve helicity correction

* fix sc2 crashes if possible (new coda_roc)

2. JLAB discriminators: first test was conducted using 1877 TDCs (500ps resolution); threshold dependence is linear, with dependence is 'almost' linear; resolution from trigger output is about 2.26ns leading and 2.36ns trailing edges; TDC output shows 530ps which is TDC resolution, will use high res TDCs to measure it; test input and scalers to be tested as well; delay from input to trigger output is 75ns (and can be decreased), delay to tdc output to be measured; first impression about width dependence: first JLAB discriminator from James Proffit had better dependence, will discuss it along with other test results when tests are finished

September 23, 2009 online meeting minutes

2009-09-23T14:59:16Z

129.57.80.194:

September 23, 2009 online meeting minutes

2009-09-23T14:56:00Z

129.57.80.194:

September 23, 2009 online meeting minutes

2009-09-23T14:48:41Z

129.57.80.194:

September 23, 2009 online meeting minutes

2009-09-23T14:16:57Z

129.57.80.194:

present: Sergey Boyarinov, Sergey Pozdnyakov

1. Next run preparations:

* BONUS readout: 3 PCs with Linux, 3 TI PCI cards, 3 RORCs, 6 crates, 26 FEC cards; new PCs will be installed on North SF, probably in DCHV rack on the floor; they will be connected to the branch instead of tage, tage2 and tage3

CLON meeting September 23, 2009

2009-09-23T13:46:27Z

129.57.80.194:

Clas On-line Meeting, Wednesday, September 23 at 10am in Room A110
------------------------------------------------------------------

1. New run preparations: BONUS readout, changes in CODA etc

2. JLAB doscriminator test plan

CLON Group Meetings

2009-09-23T13:45:52Z

129.57.80.194: /* 2009 */

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September 2, 2009 online meeting minutes

2009-09-02T14:36:33Z

129.57.80.194:

present: Sergey Boyarinov,

1. Current run (eg1dvcs):

* HV problems: Lecroy mainframe 4 (TOF) on south claim shelf is working after boards replacement, suspicious boards under testing in counting house; 2 channels in TOF still off, will be investigated if bad board is the reason; 2 mainframes recently replaced under testing in counting room, one is working so far, another is waiting; new CAEN works, all problems seems fixed, 15 more boards are ordered and 3 in repair, need to start patch panels production - Sergey Pozdnyakov

* sc2, clastrig2 crashes: all prpmc880 were replaced by pmc2800, but sc2 still crashing, will be investigated with new coda_roc

* RF board failure: Chris is working on it

* helicity delay reporting correction works, but need event rate higher then helicity frequency, can be issue with high helicity frequency and low event rate, need high rate pulser ?

* fix diskless clients in counting house (missing mice, target people took too many screens ??); need rack-mounted windows machines instead of clonwin2/clonwin3

* need monitors, mice in counting room

* sfs61 still not commissined, Sandy and SUN are working on it

2. Upcoming run:

* linux ROCs: 3 pc's needed, will buy them; 3 TI cards needed; new coda_roc will be used

* TPC readout: Raffaella is working

* room 102A cleanup

* remove prints from camac2/dccntrl IOCs

3. Other issues

* if 2 adc boards together in test setup, first channel in second board is missing in histograms - need to investigate

* new JLAB discriminator to be tested - Sergey P.

September 2, 2009 online meeting minutes

2009-09-02T13:23:30Z

129.57.80.194:

present: Sergey Boyarinov,

1. Current run (eg1dvcs):

* HV problems:

* sc2, clastrig2 crashes:

* RF board failure:

* helicity delay reporting correction

2. Upcoming run:

* linux ROCs

* TPC readout

CLON meeting September 2, 2009

2009-09-02T13:21:14Z

129.57.80.194:

Clas On-line Meeting, Wednesday, September 2 at 10am in Room A110
------------------------------------------------------------------

We will resume meetings after summer break.

1. Current eg1dvcs run status

2. Preparation for upcoming run:
* linux ROCs
* TPC readout

CLON Group Meetings

2009-09-02T13:17:11Z

129.57.80.194: /* 2009 */