|
8 July 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:
As of Monday 31-June-2003, we started installing the MIPP beamline.
I enclose the progress report from Chris Ader below of the installation as of this evening.
If all goes well, the beamline should be ready to receive beam by the end of July and if we are very lucky, we should be able to send a few fast spills down to MC7 before the August shutdown. The experiment installation should bear this in mind and should have as many subsystems as possible ready by then.
Chris Ader:
The riggers have positioned MC5VT1, MC5HT1, and MC5U02 magnets. A hole in the fence has been made for MC5U02 and Roger Zimmerman has ok'd it for tonight. The rigging work in M05 should be done by tomorrow. I have talked to Julius Lentz and water techs to then look over the magnets in this area to start electrical and water hook-ups. Additionally, I talked to Virgil Bocean about having a rough alignment done on this magnets ASAP in M05.
I had water technicians start testing all the magnets to ensure there is no acid residue left in the cooling lines after flushing at TD. The one magnet they tested today was good and they will continue their work tomorrow.
We will be ready to install the E907 Target Shield after lunch tomorrow. I have left a message for Kilmer and paged him regarding the fact we need this staged for the riggers in the highbay tomorrow morning. I have not been able to reach him yet. Also, has the steel for the scrapers been found? I need to know if steel needs to be purchased or if I need to have some techs look.
The referencing on the Palmer collimator was completed this morning. The mechanical stops for this device are being fabricated. The limit switches will be set at 1 inch while the hard mechanical limits will be set at 1.1 inch.
Jim Kilmer:
PPD will be taking over the beamline installation starting on Tuesday [7/8/03]. I hope to have a smooth transition complete by end of the week. We are able to supply the task manager and mechanical techs as required.
Target and Absorber parts.
The target shielding parts are all staged in the detector building. We intend to start assembly of that on Tuesday when I return. The material for the absorber is still at MAB but it won't take long to move over.
The scrapers are all made with steel plates and concrete blocks. All of the steel is in house and will be delivered from the railhead to MAB in the next couple of days. Blocks are readily available.
The collimator has been referenced and measured for mechanical stops. The stops are simple parts and are in the MAB shop now. We only need to change a threaded rod actuator for the limit switches to operate at the new settings. We'll need to exercise the motor to set the adjustment of the switch. The stops have to be tacked into place and then the device will be ready to install. It should be ready Tuesday or Wednesday.
UBL - Upstream Beamline Detectors
BCKOV
TGTW - Target Wheel
Peter Barnes:
Glad to hear you will be at Fermilab next week. Here's a status update of things you probably care about:
- TPC is in the magnet very close to it's final position.
- TPC lock down will be completed early next week.
- Alignment will be completed mid next week, after the lock down work is finished.
- Because of 1-3, the surveyors ask that we not move the TPC cart. In any case it is reported that this is very hard to do, so your work should not be a risk.
- The old reentrant tube is still mounted as a dust cover. You will have to remove this to mount your system. After removing the screws, I find that a screwdriver helps to pry it out without jarring things.
- The flange you mount to, as well as the inner window and window flange, have been surveyed. I don't have the numbers yet, so I can't tell you how well I did with a tape measure. I know you will be cautious inserting and setting the stops.
- The TPC cart, etc does not have adjustment in x (left-right) or yaw (rotation about gravity). It is already clear that the TPC will be offset horizontally ~2 mm (?) and with a yaw of ~3 mr (?). I don't have real numbers from the survey, yet.
- Once you are happy with the target system mounting, the survey crew can survey the location of the target wheel opening.
- First thoughts on addressing the mis-alignments noted in 6: These don't matter for the TPC data; they will become part of a host of spatial corrections. If we feel that the yaw angle matters for the targets, we can think about shimming your system to remove the yaw. We probably do want to take out the horizontal offset. Can we clock your target wheel/motor so the active target is not exactly top dead center? I expect (from geometry) we could get a few mm offset and not drop too low. We'll play this by ear until we get solid numbers from the TPC and target.
- We don't have the serial port connection to the DAQ computer installed yet. We have tested the hardware and it works as advertised. Unless you feel this is extremely urgent, I think both Holger Meyer and Andre Lebedev probably have higher priorities next week. David Asner and Mike Heffner will both be there in the next month and can do this.
CTGT - Cryogenic Targets
NTGT - NuMI (MINOS) Target
Sten Hansen:
Erich and I went out this afternoon with a twinax to bnc dongle for the capacitance meter. We measured 6.4 nF on the front connector which matches the number we got yesterday with the clip leads. We still couldn't get a connection at the side connector. It seems as if the center portion of the twinax connector is loose. Are you planning to roll the TPC out soon or should we try and look at the interior bore of the connector with a dental mirror?
ZipTrack
JGG - Jolly Green Giant
Rosie
Leon Beverly:
In yesterday's meeting it was mentioned that Karen Kephart, lab 6 or Eileen Hahn, lab 7 may be able to help you with the PMT coating that you need.
Terry Tope:
Here is a drawing of the expansion volume (.gif, .pdf) BTeV plans to use for the test beam. Their actual vessel is 2200 ft^2, so they plan to have 10 of these on it. Basically its just 4 ft. diameter ventilation hose that expands and contracts guided by four rods. The hose end is glued to thin metal sheet. The hose was a problem because it was stitched around the metal support wire so a grad student was lucky enough to fill all the holes. But they have not tried it on an actual system.
DC1-4 (E690 Chambers)
DC5 & DC6 (Iowa Chambers)
Andre Lebedev:
Root version 3.04.02 is installed in /usr/local/cern/root/3.04.02. In order to run root, you will need to set environment variables
ROOTSYS=/usr/local/cern/root/3.04.02
LD_LIBRARY_PATH=$ROOTSYS/lib:/usr/local/lib:$LD_LIBRARY_PATH
PATH=$ROOTSYS/bin:/usr/local/bin:$PATHNote, it was compiled with gcc-3.2.3, which is installed in /usr/local. If you want to compile applications involving root (in particular MIPP offline soft), you will need to use that version of gcc.
Finally, if you need an account on the machine, let me know, and I'll add you in.
Alignment
The next call will be Tuesday, 15 July 2003, at 1:00 PM CDT in WH-2NE, Snake Pit.
