RUN 2B L1CAL MEETING MINUTES
                   28 June, 2005

Present 
o Fermilab      T.Adams, L.Bagby, M.Cwiok, D.Edmunds, G.Ginther,
                S.Lammers, M.Mulhearn,  Md.Maimuddin, V.O'Dell,
		G.Pawloski, P.Renkel, A.Stone, N.Varelas
o MSU           J.Benitez, J.Biehl, P.Laurens, R.Unalan
o Nevis         H.Evans, C.Johnson
o Rice          P.Padley

(apologies to those I couldn't see)


Nevis: TAB/GAB (H.Evans)
--------------

o Measuring jitter at various points in the VME/SCL to TAB to G-link
  chain in an attempt to understand where large components of it come
  from. 
  - note: the total jitter level we are seeing (sigma ~ 40 ps) seems
    to be smaller than what would be indicated by the L2/L3
    b.e.r. measurement at Fermilab of ~1e-4.
  - will probably need to change to using CLK53 as the basis for
    g-link transmission (rather than a 53 MHz clock derived from CLK7
    as is the case now)
  - as soon as an appropriate scope is found at Fermilab the jitter on
    CLK7 and CLK53 can be measured



MSU: ADF v2 (D.Edmunds)
-----------

o Working on tests of transition system
  - building a system to test correct connectivity
    . plugs into patch panels
    . hooks into TWG
  - assembly being finished now
  - should be ready to go to Fermilab late this week
  - this system will be useful when we install in MCH1

o ADF transition modules
  - have run channel link tests (ADF-to-TAB) on this for the last week
    ==> no problems observed



BLS-to-ADF Transition System (A.Stone)
----------------------------

o Hardware now at Fermilab
  - All pleated foil cables
  - 25 patch panel cards
  - 4 ADF transition cards
    . had observed some warping on these cards
    . addressed by fabricator
    . should get the remaining 21 (pre-production) cards soon

o Test Card
  - order to do layout sent out today
  - ~2 weeks until we get the cards back

o Have enough cards at Fermilab to do system tests at Fermilab
  - will try to get these installed in an ADF crate(s) today

o Working on inter-rack wiring
  - will start labeling cables as they are tested


Test System (M.Mulhearn, M.Naimuddin)
-----------

o GAB-to-TFW transmission
  - can run a cable from the TFW to the TEst Area
  - TFW can check that transmission works at a basic level without any
    and/or terms

o Multiple ADFs-to-TAB
  - need to finish mechanical work in ADF crates
    . cages for transition cards
    . cable dressing

o L1CalTrack Match
  - in principle, everything is ready for this

o Jitter on CLK7 and CLK53
  - need scope for this

o Data to tape
  - need to put together a trigger list including TTs(2a,2b) and
    precision readout
    . make special trigger to fire on energy in 16 TTs that are
      connected 
  - can also use existing "hand pulser"
    . allows comparison of 2a and 2b TTs
  - can also use pulser to generate L1accepts for specific BCs
    . use this to test that L1Cal is sending out correct data


Shutdown News
-------------

o Current best estimate is Oct. 31
  - but this may change depending on status of accelerator



Pulser System (P.Renkel)
-------------

o see slides posted on agenda page

o Pulser injects charge into individual calorimeter cell electronics
  - typically set up to inject charge into only a few cells
  - each pulser box sends signals to multiple cells
  - each "pattern" sends charge to a different set of cells

o Checking for Dead/Bad cells
  - need to check TT in detailed display to see which patterns caused
    problems. Since different patterns fire different cells, can use
    this information to narrow down to the cell level.