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EVO meeting
EVO meeting
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Description
* Institution status reports
* Progresses on FDIRC and Forward PID
* AOB
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*** The EVO meeting will open at 16:30 to allow people to setup their connection. ***
EVO Meeting Access Information:
- Meeting URL
http://evo.caltech.edu/evoGate/koala.jnlp?meeting=MIM9Ms2M2uD9Ds9a98Da9I
- Phone Bridge
ID: 1144008
Central European Summer Time (+0200)
Start 2009-07-29 17:00
End 2009-07-29 19:00
Japan Standard Time (+0900)
Start 2009-07-30 00:00
End 2009-07-30 02:00
Eastern Daylight Time (-0400)
Start 2009-07-29 11:00
End 2009-07-29 13:00
Pacific Daylight Time (-0700)
Start 2009-07-29 08:00
End 2009-07-29 10:00
EVO Phone Bridge Telephone Numbers:
---------------
- USA (Caltech, Pasadena, CA)
+1 626 395 2112
- Switzerland (CERN, Geneva)
+41 22 76 71400
- Slovakia (UPJS, Kosice)
+421 55 234 2420
- Italy (INFN, several cities)
http://server10.infn.it/video/index.php?page=telephone_numbers
Enter '4000' to access the EVO bridge
- Germany (DESY, Hamburg)
+49 40 8998 1340
- USA (BNL, Upton, NY)
+1 631 344 6100
- United Kingdom (University of Manchester)
+44 161 306 6802
- Australia (ARCS)
+61
0261128742 Canberra
0282124591 Sydney
0362370281 Hobart
0386858362 Melbourne
0731390705 Brisbane
0884631011 Adelaide
0864616718 Perth
- Netherlands (Nikhef, Amsterdam)
+31 20 7165293
Dial '2' at the prompt
- Canada (TRIUMF, Vancouver)
+1 604 222 7700
- Czech Republic (CESNET, Prague)
+420 95 007 2386
Attendance: Jerry, Doug, Mario, Dave, Nicolas
- Doug gave a status report about the Maryland phototube scanning setup.
- X-Y step motors controlled by Labview are available.
- A dark box is being built.
- The laser system has been ordered.
- 2 PMTs (1 H8500 and 1 H9500) have been ordered, the delivery time should be around 6-8 weeks. The connectors and the pixel numbers are different for the two tubes.
=> all needed pieces but the readout are being gathered.
- Simple home-based electronics will be developed for the test bench.
- Manpower is 2 students + 1 new postdoc.
- A small cosmic ray telescope has also been built.
- Jerry presented an update of the FDIRC design -- see slides. The 12 focusing blocks have now rectangular shapes which match the dimensions of the bar ends. The total number of channels will be around 30,000 which is 3 times more than the DIRC but which is needed to do precise measurements. The next step is to find the best position for the focal plane as some rays will always be out of focus because of the wedge.
- Nicolas presented the first mechanical studies done in Orsay for the forward TOF PID detector, using one of the designs shown by Jerry at Perugia -- see slides. The main comments were the following:
- the outermost part of the quartz blocks must be covered with a photon absorbing surface so that only direct photons reach the tubes. This photon trap will fill some space in this area.
- the quartz sectors must be tilted (best angle to be computed).
- there are two kind of backgrounds. First, the background in the PMT area which could be fought by shielding the tubes. Second, the rate of tracks crossing each sector and against which nothing can be done.
- AOB
- Jerry reported that he gave Frank Porter a few blocks of quartz so that they could be put in front of calorimeter crystals during a beam test at Frascati scheduled for beginning of 2010. This will allow to estimate the actual impact of a forward PID on EMC measurements.
- An updated schedule for the BaBar D&D (in particular about the SOB disassembly) will be asked at the coming SLAC planning meeting.
- More information about the actual designs of the EMC and the DCH will be asked to allow Orsay engineers to produce more realistic drawings for the forward PID structure.
- Next meeting should be early September.
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