E907 Installation Conference Call Minutes
| 07 January 2003 |
Location |
Phone Number |
Access Code |
| WH-2 NE |
865-673-6703 |
334823 |
- 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
Survey scheduled for 1/9/03 in MC5 & MC6; two colliminators have been installed at Z=900; P3 magnet shorts fixed, hoping to extract beam to switchyard dump prior to Accelerator shutdown, waiting on safety approvals.
UBL - Upstream Beamline Detectors
BCKOV
7 mr hole in one mirror completed and returned from vendor. Will forward info to LLNL to place PO for resurfacing all 4 mirrors; Win looking for quartz PMTs (needs 5, I forgot the tube diameter ö 2ä?); Drawing that details modifications needed to remote the one CKOV is complete. Work will be done at MAB; Dave Northacker distributed a design memo for the gas system. Raja, Win, Holger, etc. to review and provide feedback. Some parameters are set via Mike Heffner's web paper, but others (such as - should a "flow through system" be used) need to be set before design can be implemented.
TGTW - Target Wheel
CTGT - Cryogenic Targets
NTGT - NuMI (MINOS) Target
Start anti-dust room construction the week of 1/6; Support stand will be moved into its general resting place the week of 1/13.
ZipTrack
JGG - Jolly Green Giant
Ziptracking should be complete 1/9.
Rosie
Leon Beverly:
Rosie was filled with LCW today. With only a few pounds of supply pressure, there are 3 leaks in the coils. Two are relatively minor and the third looks like a serious problem. The two minor ones are at the outer ends where there is a weep either on a copper block coupling or where the SS tube meets the copper. I believe both of those can be repaired without much of a problem.
The 3rd leak is at the center tap point of the coil. It is the second coil from the steel of the top group of coils. We cannot tell what exactly is leaking, but the water is coming out from under the epoxy.
An LCW leak is present on the top coil, 2nd coil out from the steel at its center tap. It is a slow leak. So we will live with it for now while exploring possible patches. The normal technique of soldering is not possible because epoxy on adjacent coil turns would be affected.
The ziptrack relocation with survey to follow, takes place 1/9.
DC1-4 (E690 Chambers)
Ingrid Fang (12/20/02):
The drawings for DC3 and DC4 support frames have been sent out for bids. Due to hard work [by Gary Smith and Ingrid Fang], the assembly drawings are included in the sets for reference.
David Miller:
(12/22/02) Lab 6 is deserted and won't be populated until after the new year. So the large chamber (DC1) won't be fixed until then. The good news is that the resistive epoxy is an excellent match to the original. Also, the small chamber opened when Ed was here (DC3) is reassembled and has virtually no leaking gas. David Northacker helped me do a quick 300 V test and the chamber behaved very well. This is a good sign since it had sparked before.DC4 is on test stand. More work to do checking out discriminator cards. After all electronics is operational the chamber will be source tested.
(1/7/03) I am repairing the 3rd of 8 planes on DC1 (the biggest). It will be done by this afternoon. The 4th should be done by tonite. The 1st plane took a long time. Its wire replacement went quickly but it also had extreme problems with the connections to its connectors. I had to replace the 5 wires I broke but also had to repair 40 other wires which were either shorted to their neighbors, unconnected to the connectors or had broken leads in the connector ribbon. The other planes don't seem to have these extreme numbers of pre-existing problems. Also, my technique is improving, so the repair is getting faster. David Northacker is helping me train Chamber #3 with the high voltage.
DC3: Dave is working on techniques to improve grounding using copper tape.
DC1: (largest chamber) Dave Miller is repairing the 3rd of 8 planes (1/7), will do the 4th plane in the evening.
DC3 & DC4: a quote to fabricate support stands is due 1/17.
DC5 & DC6 (Iowa Chambers)
PO requisition for support stand fabrication faxed to LLNL 1/8. Raja wanting to get Chris White involved with RMH electronics.
Peter Barnes:
We are on the hunt for some CAMAC TDCs for the TOF, LeCroy 2229. We need at least 15; 20 would be better.
David Asner:
I have located 20+ TDC2229's at Berkeley. Twenty or so will show up at LLNL on Monday. After testing if some are found not to work they can be swapped for the remaining few at LBL. These modules have not been used for a long time but are "thought" to work.USC have dollars and will purchase scintillator material and PMTs - getting quotes.
Rajendran Raja:
All parties have signed the agreement between IHEP, Fermilab, and MIPP giving Fermilab ownership of the (formerly) IHEP PMTs in the RICH.
Email reply from Landsberg:
Thank you very much-Ijust obtained the paper that
the money are in my IPH account. I wish you the success
in your experiment with the help of our (now your) phototubes.
Leonid Landsberg
Plane assembly technique has been developed and Michigan is fine-tuning. The planes will be assembled in MC8 beginning this week. Russ Rucinski has review structural design(?)
Supply & distribution is understood, but mixing needs iterations on design; Over the next month, work on gas shed and a rack installation in MC8 will be done. Terry/Dave will investigate the feasibility of using a tube trailer rather than individual cylinders for the supply system.
Peter Barnes:
Following a series of discussions, I've updated the electronics maps and module lists. Please take a look and let me know of any problems. In particular, the rack locations should be stable for planning cable runs. . .
Major changes include:
- Connection List:
- New Connection List table shows data cables between crates.
- Layout:
- Moved rack locations to improve physical access paths.
- Moved far upstream VME crate to upstream of JGG.
- Moved 8210 out of TPC VME crate.
- Added upstream HV rack to free up some rack space.
- Updated daisy-chain paths based on new layout.
- TOF:
- We've borrowed from LBL the balance of 2229 TDC's required.
- TOF modules are now listed.
- Moved TDCs to TDC crates, read into a 4299.
- CKOV:
- Moved TDCs to TDC crates, read into a 4299.
- ECAL:
- Added NIM-size bin for readout controllers.
- Added CAMAC crate for ECAL readout.
Alignment
Peter Barnes:
The wireless base stations have been installed in the counting house and the MC7 worm. Thanks go to Andrey Bobyshev, CD. The link to the worm is still limited to 10 Mbps, until the
fiber is terminated (late December?) and the 100 Mbps switch installed.
Installation of cable tray for electronics cables will begin 1/13.
The next call will be Tuesday, 14 January 2003, at 1:00 PM CDT in WH-2NE, Snake Pit.