Minutes of the ICD meeting at UTA (with FNAL and LT by phone)
                      thursday 22-Jan-198 1:30pm
                 Send corrections to Elizabeth Gallas
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ANNOUNCEMENTS *********************************************************

ICD FULL PROTOTYPE WORKING MEETING:
We will meet at UTA Feb 23-25 (monday-wednesday) at UTA.
Elizabeth, Lee and other LT people will come to UTA in person.
Purpose is to get the full prototype running.
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NEXT MEETING IS THURSDAY 29-JAN-1998.  
Issues leftover from this week's meeting are:
    ANDY        check with Bicron on expected production/delivery lag
    ELIZ        check on solenoid test plans
                check with dean on readout electronics for solenoid test
                check on space available for fiber cable standoff 
    LEE         send EG pmt base daughtercard
                what is the new motherboard size?, should pass around 
                    design for group/dean inspection.
    KAUSHIK     call ann arbor elect (derek sent phone number)
                    to release base card drawings to LT
                send run I base test QA procedures and a few examples
                    of tests to Lee
    JIA LI      make dxf file available to Kotcher
    MARK        check Camac controller card order
    VICTOR      how many fiber connectors will be needed of each type
                    (including at least 20% spares) to order from DDK?
    PAUL        full prototype could include light distribution systems
                    for laser and/or led system.  status
                any spare blue led's  (lee needs some) ?
    VICTOR/PAUL integration of the calibration fibers in the backplane
                    for the full prototype test
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MINUTES FROM THE MEETING **********************************************

ELIZABETH sent materials needed for wrapping scintillator tiles to UTA
including:
1. a partial roll of  Tyvek. It is hard to say  how much Tyvek is on the
   roll, but it may be enough for production if we use it sparingly.
2. I also got a few feet (6?) of EMI  paper which is a thick paper which
   is jet black on one  side and silvered on the  other. I got this from
   Ken Del Signore - Central PreShower is using it as the final wrap for
   light tightness with the silvered  side on the outside. They claim it
   is very good.
- I think it  is difficult  to buy a small  quantity of  either Tyvek or
  EMI, but if  we like it, we  should get  more if we  need it. CPS just
  bought   another  roll  of EMI  but  they  are  almost   finished with
  production, so I see an opportunity here 

EG talked to John Najdzion - FNAL mechanical technician - who has worked
on the method of freezing fibers in bundles to polish them.
No documentation has been produced to date so EG will write document
to communicate ideas on how to polish fibers.
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KATHLEEN/LEE 

LT is making  progress on  the fiber  cable transmission  testing. A CCD
camera is being used which is very  sensitive to light loss. Results are
expected to be good to the 10% level. They are using green leds.
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LEE         

The fanouts (hv,lv) will be about the same dimensions as the underside
of the crate.  Lee should send a paper copy with dimensions to E who can
bring to lab8 for evaluation of feasibility (to be routed on machine
there). 
Boards may also be etched by ray yarema's group ?  

The motherboard design has been updated to accommodate changes in
operation of the preamps which previously used only pins on one side but
now  use both pins (preamps feature 2 rows of 13 pins for mechanical
stability).  
The change involves running traces to connect adjacent pins.
Lee will pass around latest design for group/dean inspection.

Lee will send PMT base daughtercard to to E for Dean to look at.

PMT base test stand  - voltages match up between old and new design at a
level closer than previously reported.  LT is working up QA test
procedure to check each base. The current test is plagued with pickup of
local radio stations.  In situ, the bases should be grounded to the
cryostat and will be enclosed in the crate for sheilding.  The test
setup should be put a in metal box connected to ground.
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JIA LI      

For the full prototype test, the full size iron block and the 3 drawer
prototype crate will be used.
For the solenoid test, UTA and LT will have a little more time to put
the full size crate and new dimensioned drawers together, respectively.

One of the iron blocks is expected to be delivered week of 27-jan-98.
Jia will buy paint locally and paint the block for rust prevention.

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KAUSHIK     

Minh plotted results from the run 1 box test results but they are not in
the final form yet.  Next plots should be as function of delta time
between tests.  Results show gain is 30% low where 15% is expected and 
15% is unaccounted for.

As of   27-JAN,  Minh is  still  working  on the  plots.  He  stopped by
yesterday and told Kaushik that it  will take him another week to finish
the report. Obiora is also making other plots - similar to the ones Mark
made earlier. That will also take a few weeks.

Who should work on PMT  aging studies?  Despite the need to start tests
up soon, due to  lack of manpower,  we will till  prototype and solenoid
test are done.

Progress   continues on  the PMT  tester.  current  work is  on computer
software.  All  components are in  hand but  putting  together will take
about a month.

Need to collect 12 pmts for full prototype test.
    To choose which tubes, look at box testing results.
    Kaushik will try to have PMT tester run on these tubes.
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MARK/VICTOR Module test stand status

Still reading out 3 channels and working out the bugs.  Mark will attend
meeting next week for full report.

To complete impedance matching for electronics in full prototype test,
Someone needs to check the input impedance of EG&G AD811 ADC model number
EDH11.  
The gain of the Run I CR test stand is 35 (compared to the ADC/BLS system). 

We expect 2-3mv (maximum 6) per cosmic ray and 
1.5 minimum mv/count due to noise.
The current gain is a factor of 35 from adc/bls system.
We need at least 30-40 adc counts to see signal over noise but this may
be difficult.  Kaushik says 60-70 is really the minimum viable.
Currently average ADC counts in the CR stand is around 100 counts.
   
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