Rather than open up the roof of MC7 first thing to install the magnets, we will delay the opening until support stands for CKOV, RICH & NCAL are designed, fabricated and installed. Once the supports are in place, the crane needed for magnet installation will be used to put all these heavy pieces directly into place.
Bob Woods has gotten information from E871 on their experience with floor settling in MC7. Based upon their experience, Bob estimates there will not be much general settling in the MC7 area, but there may be movement from the freeze/thaw cycle. All things considered, the AN will be centered on the beam height, currently 80.5".
Jim Ellermeier continues development of the installation procedure for the magnets. Eventually the procedure will become part of the hazard analysis for magnet installation.
Rosie needs about a 13" support under the magnet to elevate it on beam center. Rather than use steel (~490 lbs./cu. ft.), Bob Woods suggest installing a concrete pad (~150 lbs./cu. Ft.) on top of the concrete pad. In order to maximize available floor space, the pad needs to be limited as close as possible to the magnet footprint (~10' X 15'). Bob will design the pad.
As an option, Jim E. will also see what steel pieces are available at the railhead.
Gary Smith will re-position the major components by doing the following:
Gary Smith made a drawing showing a cross-section of the TPC inside the JGG. With the TPC centered in the JGG gap, there is 5 ½" below and 4 ¾" above the TPC to allow alignment, which is good. In the y direction, the TPC fits, but there is little room for adjustment, which should be ok.
Ingrid Fang has made some progress in support stands, but needs more answers on motion range, weights, etc. to get a detailed design.
Jim Kilmer &endash; support stand design is complete. Awaiting budget code to order materials.
Chamber one is identified and will be attached to the US face of CKOV. Ingrid will design the support. Chambers 2, 3 & 4 need to be identified.
Raja needs to get Beams to produce a beam sheet for the primary area. Also, corrections need to be made in Raja's secondary beam sheet.
Anyone working on E907 must familiarize himself or herself with the WBS document, which can be reviewed at the E907 Web site under Fermilab at Work. For each WBS item you work on, record the WBS item, date and hours worked. Please forward that info to me weekly &endash; beverly@fnal.gov.
In order to work efficiently, you are encouraged to seek information (yes, bug them frequently) from the appropriate subsystem contact.
The next meeting will be Wednesday, 6 February, Theory Room, WH3NE at 10:30AM.