1G.Barber - Imperial College London - EE Workshop 12-14 March 2002

EE Dee Assembly

Contents:-•Area

•Manipulator

•Future Plans

2G.Barber - Imperial College London - EE Workshop 12-14 March 2002

Area

At present we will be using the compound in Building 867. The plan is

to move one of the Opal frames into this region and set it in place using concrete blocks to adjust the height. It will have the

originalOpal back plate fitted and the idea is to mount a plate to the

front of this that has the CMS fixing points machined into it. The

advantage ofthis is that we will be able to test installation of the super crystalmodules in various areas by making small inexpensive plates and

the support will be given by the original Opal backplate.

3G.Barber - Imperial College London - EE Workshop 12-14 March 2002

Manipulator

We are developing a super crystal manipulator at Imperial College

that has not only to positions the SC’s on the Dee but also allows an

‘in place’ tilt to enable the Saclay monitoring fibres to be introduced

into the back. We hope to bring this manipulator arm to Cern in the

next two months to prove/develop this procedure. This will then be

the basis for the assembly chapter of the EDR.

4G.Barber - Imperial College London - EE Workshop 12-14 March 2002

Model of Super Crystal

Model of the Super Crystal, complete with a positional spacer, this is made from aluminium and will need to be filled with lead shot to arrive at the correct weight

5G.Barber - Imperial College London - EE Workshop 12-14 March 2002

Manipulator Mechanism

Sequence to ‘fold’ the arm

and allow the monitoring

fibres to be fitted

6G.Barber - Imperial College London - EE Workshop 12-14 March 2002

Future Work

The next 3 months will be spent developing the equipment and technique needed to assemble the dees. It will not be the finalscheme but we need to be confident enough in the philosophy topresent it in the EDR. It can be improved and adapted over the coming months/years to accommodate any changes that may

happento the design. It is important to develop ‘a feel’ for handling the super crystals and with this we can adapt the equipment to

achievethe best (and for best you could say the simplest) solutions.