|
3 June 2003 |
Location |
Phone Number |
Access Code |
|
WH-2 NE |
865-673-6703 |
334823 |
Progress Updates and Issues
- Upstream Beamline
- Targets
- TPC - Time Projection Chamber
- Magnets
- CKOV - Cerenkov
- DC - Chambers
- TOF - Time of Flight
- RICH - Ring Imaging Cerenkov
- ECAL - EM Calorimeter
- NCAL - Hadron Calorimeter
- Gas Systems
- DAQ - Data Acquisition
- MC - Monte Carlo
- Installation
- MC7 - Enclosure and Counting House
- Meetings
- Project Management
Leon Beverly's meeting summaries in italics.
BEAM - Beamline
Raja:
I have done an analysis of where the MIPP beam hits for various beam momenta with Jolly Green Giant set at +0.7 Tesla and Rosie set at -0.6Tesla. With these settings all beam momenta from 5GeV to 100 GeV ae focused on the beam dump for both charges. This is a byproduct of MIPP optimizing RICH acceptance. These studies are needed for beam SA and SAD documents.
I have done an accounting of the material in MIPP beam line for radiation safety studies. The results are quoted in interaction lengths.
Raja:
Summary of conclusions at todays beam meeting.
1) Target cage work has started. Jim Kilmere stimates a little over 1 week to complete.2) June 2 is the date for beam survey stakeout.
3) We start Installation on June 4th. Christine Ader will talk to Dave Augustine to have a Crew Chief Assigned.
4) Still outstanding items needed to install- MC5VT1, the Eartly trim has to be brought out from the M-polarized area and tested. C. Ader will arrange for moving this and J.Lentz will perform the tests.
5) The remaining magnets will be deliveered this week from Technical division. They are the trims and the 4Q quadrupoles
Steps to Installation-
a) Move Dipoles MC5U-1, MC5U-2 to their correct positions.b) Install trims MC5VT1, MC5HT1 in their correct positions
c) Install the target cage MC5TC
d) Install the absorber MC5ABS-- This needs aluminum
e) Proceed with installation sequentially till complete. Estimated time ~ 2 weeks.
Items still needed- Magnet stand bases and shims. C.Ader will ask for tech help to complete this.
C. Ader will produce the corrected magnet positions taking into account the measured flanges (not all flanges ae the same). Raja will correct the beam sheets with the new numbers.
Raja:
On Monday, June 2, the surveyors will stake out the MIPP beam line. I have updated the MIPP beam, and survey sheets on the Beam page.
Changes-
1) All the trims are moved to be within 1 ft of their predecessor.
2) I have given the TRIM TD numbers in the beam sheet. All the ones chosen will have the standard 4.8" flanges. The oddball flange trim TDTA004 is being used as a spare. The trim TDTA007 is known to have oddball strength, it has been assigned a vertical (easier) trim job.
All the 3Q's have been measured to have 7" flange at the bellows end and 5" at the other end. So they can all be 12" nominal separation.
Surveyors, please be sure to use the latest versions to be found on the Beam page. They all have the date 31-May-2003 on them.
UBL - Upstream Beamline Detectors
BCKOV
TGTW - Target Wheel
CTGT - Cryogenic Targets
NTGT - NuMI (MINOS) Target
Ron Soltz:
Made first contact with Sten Hansen about the gating grid drivers.
Dave Miller:
ZipTrack
JGG - Jolly Green Giant
Rosie
DC1-4 (E690 Chambers)
Raja:
Minutes of today's E690 Chamber meeting.
1)Cables from Discriminators to TDC's are critical and have to be made. Dave Miller will give Holger a sample cable. Holger will get the requisuite number of the correct length manufactured.
2)Labels- Pierrick will send Holger the Excel sheet giving the labelling scheme. Holger will order from brady.com the needed labels and get them ready.
3)Cabling DC4- Can start as soon as labels are sorted out. We need to have the chamber ready for Asner's visit next week.
Iowa and Fermilab students will help in this.
4)Testing preamps and discriminators- 1 set of pre-amps needed for DC4 exist. John Anderson and Pierrick will concentrate on testing the discriminators on a single channel basis. RInging tests will be done in MC7 in situ.
5)Iowa Chambers- Nick and students are making great progress with DC5. DC6 should be out of box right now.
6)Safety documents- Win Baker will help with Safety regarding DC electronics. I spoke with Peter Barnes after the meeting. He and Leon Beverly have looked at the question. They have some info, as probably has Dave Christian.
DC5 & DC6 (Iowa Chambers)
Mark Messier:
I'd like to have a MIPP software phone meeting this Friday, June 6, from 1-3 FNAL time.
A few items to discuss:
[1] managing configuration parameters. Both David L. and Mark M. have been thinking about this.[2] Online monitoring - Mark M. + student have started on this
[3] Package updates
Please send items you would like to discuss. I'll circulate an agenda with the reminder message early Friday.
Peter Barnes:
Your items 1 & 2 are rapidly becoming important:
1. The DC team is starting to cable up DC4 and DC5. Presumably we want to start to capture the mappings (wire - preamp - cable - discrim slot - cable - tdc slot)2. The DC team and David Asner are going to be starting to test the DC4 readout with the real DAQ next week. Presumably they will need some way to monitor the data they take.
Peter Barnes:
I've finally caught up with the changes we've planned for the rack and crate layout. The new (current) version is on the web at the usual place, linked off the DAQ page (note the link target has changed to allow you to reach the old versions):
Major changes include:
1. Inserted 3 racks between the magnets, for- DC123 TDCs,- TOF:
- HV,
- discriminators (4416),
- ADCs (4300),
- TDCs (2229),- CKOV:
- discriminators (4416),
- ADCS (4300)
(TDCs are now downstream of Rosie, in CC24)2. Magnet Hall probe boxes are included:
- HALL12 for JGG, at the top of RR08 at the upstream face of JGG. Should this be moved to RR06? (trade off probe cable vs. GPIB cable)
- HALL34 for Rosie, at the top of RR17. Should this be moved to RR17?3. Ethernet serial port boxes are included.
4. Added rack in MC8 for Drogues, etc. What needs to be here?
5. Updated CKOV modules.
6. Updated HCAL modules.
Please check your detector and make sure I haven't messed up . . .
Alignment
Peter Barnes (in response to email discussion):
We want to set up the geometry like this:
- The JGG is in place.
- The center of the TPC active volume will go at the center of the JGG field, to minimize the variations.
Holger - is this the physical center of the aperture?- The downstream face of the target will be at the minimum safe distance from the TPC window. (This is 15.156" downstream of the optics bay flange face.) As Ed noted, the target will end up near the upstream face of JGG. This is documented on the TPC Optics Bay page.
Jerry - we are still aiming for this location, correct?- 4. The CKOV will go where Ed says wrt to the target.
Ed - how do you want to specify this distance? Of course Virgil will get it right, but it would be nice if we knew something we could check with a tape measure.Peter - One of my jobs next week is to work with Virgil on setting up the TPC alignment and getting steps 1-3 documented.
The next call will be Tuesday, 10 June 2003, at 1:00 PM CDT in WH-2NE, Snake Pit.