E907 Installation Conference Call Minutes

18 July 2002	Location	Phone Number	Access Code
	WH-11SW	805-240-9463	536495

Contents

Agenda

Progress Updates and Issues

1. Upstream Beamline
   1. BEAM - Beamline
   2. UBL - Upstream Beamline Detectors
2. Targets
   1. TGTW - Target Wheel
   2. CTGT - Cryo Targets
   3. NTGT - NuMI (MINOS) Target
3. TPC - Time Projection Chamber
4. Magnets
   1. JGG - Jolly Green Giant
   2. Rosy
5. CKOV - Cerenkov
6. DC - Chambers
7. TOF - Time of Flight
8. RICH - Ring Imaging Cerenkov
9. NCAL - Calorimeter
10. DAQ - Data Acquisition
11. MC - Monte Carlo
12. Installation
    1. Alignment
13. MC7 - Enclosure and Counting House
14. Meetings
15. Project Management

Next Call

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Agenda

Time (CST)	Dur (min)	Lead	Topic
3:00	5'		call setup
		Chuck Brown	BEAMS
		Mike Heffner	Beam CKOV
		Peter Barnes Ingrid Fang	TPC Electronics Test Stand TPC Stand
		Jim Ellermeier	ROSIE Welding
		Jim Kilmer	CKOV/DC2 Stands and Rails Quotes
		Mark Messier	RICH
		Adam Bujak Dave Northacker	Chamber Testing Amplifier Cage
		Tim Bergfeld	TOF
			AOB

Progress Updates and Issues

Leon Beverly's meeting summaries in italics.

Upstream Beamline

BEAM - Beamline

Chuck Brown released final beamsheet for comment. Tom Kobilarcik to pick up beam modeling tasks from Ed Hartouni.

UBL - Upstream Beamline Detectors

Targets

TGTW - Target Wheel

CTGT - Cryogenic Targets

NTGT - NuMI (MINOS) Target

TPC - Time Projection Chamber

TPC Electronics Test Stand - Peter Barnes

Made significant progress on setting up a test stand in MC7. Positioned one pair of DC power racks and the pair of VME racks near the TPC. Powered the minimum components in each rack. Faked the water interlock. Strung power, clock, bitbus, and fiber, enough for two sticks. Successfully powered sticks in the TPC. Successfully faked the chamber interlock on a stick outside the chamber and powered it. Moved the e907daq computer out to the test stand and rebooted it.

Two problems we couldn't resolve:

First, the stick removal tool just barely works. It took 40' to insert the tool completely in order to remove a stick. We have modified the tool and purchased some spray-on lubricants, which should make the insertion easier. I will try this out on Monday.

Second, we were not successful at rebooting the VME crates, in part because we could not communicate with one of the VME processors over its serial link. David Asner will address this on Monday.

In addition, I had to use the network repeater to extend the net upstream to the TPC. That leaves us a hub short for the private network. Andrey Bobyshev (Fermilab DCN) has offered to loan a hub.

TPC Physical Stand - Ingrid Fang

The TPC unit has been positioned inside of the JGG. The gap between the beam centerline and the port centerline is 1.168 inches with 0.106 inches of up and down adjustment. This is determined under two criteria:

1. The deflection of the support frame
2. The maximum travel distance of the pin

See the attached sketch [below] for details.

TPC/Hydrogen Target Stationary Stand update: Gray is working on it with my help. He thinks he needs at least three weeks to complete.

Magnets

JGG - Jolly Green Giant

Rosy

Steel material on order. Weld next week? May have to hold off for roof installation, but might be able to weld some of the time.

CKOV - Cerenkov

DC - Drift Chambers

Adam Bujak

Today [Mon, 15 Jul 200] we had with David another discussion on the support structure for chamber preamps. In my opinion, David's design is mechanically OK, but I see a problem with the electrical connection to the chamber.

It took me quite long time to make the chamber quiet. The summary of my "investigations" is as follows:

1. There is no good contact between separate pieces (glued together with epoxy!) of the top window frame;
2. No good contact between the window frame and the back frame;
3. The small screw holes I'm using (and David is planning to use, exclusively) to attach my temporary preamps' support to the chamber body do not guarantee a good connection neither.

I've solved the problem by positioning a copper tape around the edge of the surface plate and running through it the main bolts (which keep the chamber together). The amplifiers ground is soldered to this tape. I needed also to make a connection between external frames - resetting the main bolts was not enough. I have also sheets of copper-clad G10 covering both windows and soldered to the common ground; now I think, these shields are not necessary.

If there is no conflict with external structures I would suggest to use the main bolts for attaching the shielding/preamp-support structure to the chamber. For that one would need to increase the length of those bolts and off course, leave one edge of a chamber unbolted during the installation. David is hesitant to do anything which interferes with an overall integrity of the chamber. I do not know, who should make the decision, but I strongly beleave this is a way to go.

TOF - Time of Flight

RICH - Ring Imaging Cerenkov

RICH west flat rail joints have already been filled to level.

NCAL - Calorimeter

DAQ - Data Acquisition

MC - Monte Carlo

Installation

Alignment

MC7 Enclosure and Counting House

MC7 Counting House - Peter Barnes

In the counting house one of the main air conditioning units is labeled as broken. Last week the trailers were very hot in the afternoons. On Friday a repair technician serviced the working unit, which had iced over. He said the broken unit was not repairable and would have to be replaced.

Computer Networks - Peter Barnes

Met with Andrey Bobyshev (Fermilab DCN) and walked through the area discussing our network needs. Regarding the installation of public and private networks between the counting house and MC7, the cheapest solution may be to install a pair of gigabit switches, configuring some ports at either end as a virtual network. He planned to make a list of options this week. I agreed to provide him with an estimate of the number of ports needed on each network.

Meetings

Project Management

Next Systems Call

The next call will be Thursday, <date> 2002, at 3:00 CDT in WH-11SW.