Minutes Of Quick Calorimetry Meeting   31-3-00.

Present:   KWB, RMB, DJAC, PSF, PRH, BWK, ALL, CAXP, IRT.


DJAC   JLF proposed two scenarios for Barrel/Endcap crystal production, the first  has
             50/50 Russia/China and the second 66/33 Russia/China. We go for the second
             option.
             Initial proposal was to build 1SC/week for 2.5 years then 4SC/week, starting
             mid 2001 (JC/JG proposal) we finish all SC’s by Jan 2006 and last D by Sept 06.
             Current LHC startup is April 2006.
             Switching from 1 to 4 SC/week thought to be a bad scenario so will probably try
             1 to 2 to 4SC/week finishing SC’s in mid 2005 and complete D by end 2005.
             This includes no partial SC’s and saves 2000 crystals.
             Bruce and Engineers will have to work out physics and engineering considerations
             for infill crystals (3x5 often finds a place).
             Build plan is now on Web (CMS Crystal Endcap).
             PLC promising 100 crystals end April and 300 by end of the year.


RMB    Grants review taking a lot of time.
             Meeting to work out how to complete ECAL by 2005, suggestion to step up crystal
             production by paying for more furnaces. Discuss financial considerations with 
             Ian Corbett at RRB.


CAXP   Producing poster on CMS Ecal Endcap for House of Commons poster presentation.
             Drew up risk assessment for work experience student.


PSF     Prepration for humidity/drying tests for glue.
            Mechanical glueing assembly required by summer, prepare document on this with
            Brian Smith.
            Tests at CERN with 3145 RTV measured refractive index wrongly. Paul LeCoq has
            sent another RTV which he would like radiation hardness testing by Paul in the same
            way as 3145, may repeat 3145 while doing this.  


IRT      Hardware – modified sequence generator LDVS format to go into APD.
             Testing cluster algorithm to go into FED.
             Large clusters from angle tracks have same resolution as small clusters.


PRH     Worked on Grants application.
             Has produced his first CERN theory pre print, Stephen Haywood gave very useful
             assistance.
             VPT testing system moving forward, need stepper motor drive as RAL system.
             Measuring leakage currents successfully using floating DVM.
             Photonis with getters looking good in field.
             Termination for VPT leads needs some consideration to minimise soldering 
             operations at the various test stages.
             Radiation hardness tests in faceplates now at 5Mrads (none done from Photonis).
             Dose rates for 10 years LHC on web (DJAC).
             Would be good to put details of Brunel irradiation facilities on Web.


KWB   Opal work.
             Continuing with Photonis lifetime tests, 10% droop in a few hours then steady
             climb to 140% of original response. to be continued over the weekend.
             Will try and do a lifetime test on an RIE tube.
             Another trick we can try to recover photocathodes is to raise tube to 55 degC
             overnight. 


ALL     Linear collider work.
             Preparation for Labs safety tour and attendance.
             Re make VPT can to house Photonis #64 in prototype VPT Magnet test rig.
             Pulleys and belts arrived for VPT Magnet test rig, initial mechanical machined
             components are due today. Delay in mounting plate due to oversight by OM.




Laurie Lintern  6-4-00.