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.
This shows the ITS upper services support structure installed with
a few of the ITS supports (SSD I think) already mounted on it.
In this gap is mounted the ITSAMS camera #1.
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.
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.
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.
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.
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.
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.
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.
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.
Here is that same hub remounted on the TPC A side with all 3 cameras
attached.
This view of the hub show better were the cable are connected.
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.
Here is another glowing red fiber this time from camera #4.
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.
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.
Here is that same module form the other side.
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).
Here is one of the P1 patch panels attached to the ALICE mini-frame.
Here is the insides of one of the ITS SDD & ITSAMS patch panels P1.
Here is a shot 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.