ITSAMS Installation October 14-21 2007

On October 10 2007 Werner Riegler expressed his concerns that the ITSAMS camera's would be in the way of the ITS services support structure and had Yannick Lesenechal make a modification to the mounting foot of the ITSAMS cameras. This required a realigning of each ITSAMS camera system to make it work again. On Saturday October 13, Bjorn S. Nilsen flew to Geneva to do these realignments and install a temporary monitoring system. Here are some photo's from that trip.

Pictures from Wednesday October 18 2007.

ITS upper services support structure

This shows the ITS upper services support structure installed with a few of the ITS supports (SSD I think) already mounted on it.

Gab where camera#1 is located

In this gap is mounted the ITSAMS camera #1.

Gap between the upper and lower ITS services support structure.

This show the gap between the upper and lower ITS services support structure. Here you can also see how these cones are attached to the TPC services wheel. The ITS rails and their mounting to the TPC is also clearly seen.

ITS servieces support cone, lower.

Here is you can see the lower half of the ITS services support cone. Also you can see the ITSAMS temporary sending 4 port hub hanging by two of its input cables.

Pictures from Saturday October 20 2007.

Rack A12

Here is the ITS SDD rack A12. This is where the poser supply for the ITSAMS is located, upper crate left most module. On top of that crate you can see the lap-top we are using for the temporary alignment monitoring system. Behind it is the receiver hub of the 4 port Optical fiber connected hub.

The ALICE A Rack Area


Here, under the A side or RB24 side beam pipe, is located the ALICE A racks. The back of rack A12 can be seen as the third from the right set of closed rack doors.

ITS services mounted to the TPC end plate, view of FMD.
Here you see the ITS services (cable trays) mounted onto the TPC support wheal. In the distance you can see the FMD detector, the 4 wire supporting the beam pipe a the ITS, the beam pipe, covered in the foreground to protect it, and the cable trays mounted onto their support structure.

TPC side A
Here is the A side view of the TPC at its midsection. The ITS rails are still in place and the beam pipe valve can clearly be seen. The cables of the ITS are hanging from above and below.

ITS Upper cable tray extension, removed.
Here you can see the upper cable tray extension, now removed, which held the ITS cable while the TPC was bing moved over the ITS.

The temperary Optical fiber extended 4 port hub (sender unit)
This show the temporary Optical fiber extended 4 port hub, sender unit with only one of the 3 ITSAMS camera plugged in. This unit is located, temporarily, at the A side of the TPC. It communicates with its matching receiver units, at Rack A12, via the 2 orange fibers. It is powered though the cat 6 cables, connected together above left. The USB signals and power to the cameras are sent through the cat 6 cables with the masking tape labels on them. On top of the hub are two patch panel boards which separate out the power for the lasers, camera and hub, and make up the USB signal connections to the hub inputs.

The temperary Optica fiber extended 4 port hub (sender unit) will
all 3 cameras
Here is that same hub remounted on the TPC A side with all 3 cameras attached.

Same hub, different view
This view of the hub show better were the cable are connected.

Camera #1 optical fiber
Here is shown, in the gap between the TPC support wheal and the ITS services support cone, a glowing red optical fiber. This fiber is glowing red because the red laser diode is flooding the outer layer of the single mode fiber with light in addition to lighting up its central core. This flowing red optical fiber is from camera #1 of our ITSAMS system.

Camera #4 optical fiber
Here is another glowing red fiber this time from camera #4.

The A side of the TPC.
This is the A (or RB24) side of the TPC with all of the scaffolding around it. The ITS installation rails are still in place.

TRD module being readied for installation
Here is one TRD module being readied for installation. It will be lowered into the pit, after the removal of the scaffolding, and slid into place on the ALICE space frame.

TRD module, other side
Here is that same module form the other side.

ALICE mini-frame
This is the ALICE mini-frame. It will support the ITS, FMD, T0, V0, and TPC services and hold the platform for the PMD. This side will be up against the A side of the TPD (without all of the scaffolding).

SDD P1 patch pannel
Here is one of the P1 patch panels attached to the ALICE mini-frame.

SDD+ITSAMS P1 pach pannel
Here is the insides of one of the ITS SDD & ITSAMS patch panels P1.

View down the ALICE pit
Here is a shot down the ALICE pit.

2nd View down the ALICE pit
Here is another shot down the ALICE pit.

This represents the status of ALICE as of Saturday October 20 2007, at least from our point of view.

More pictures to come.