Procedure of FTPC removal from the STAR detector ------------------------------------------------ 1. Set up the installation platform 2. Rail installation - Needed parts: 2 short (3') and 2 long (5') rails 2 clamp fixtures with 1' rail pieces 2 rail supports - Mount clamps at IFC ring - Mount rail supports in position at the far end of platform - Mount long rails first, starting from clamp - Add short rails ( Because they stick out over the end of the platform you have to remove the top tube of the railing!) - Rail adjustment -- You need: Tape-measure, water or digital level ad straight bar -- Rails must be parallel with 840mm distance (inner edge), horizontal at same height and should be vertical on the IFC ring -- Adjust distance and horizontal level starting at IFC ring. Outside use the flexibility of the rail support. -- To check the 90 degrees in respect to the IFC ring: Make 2 marks on each rail at the same distance from the IFC ring and measure the 2 diagonals. -- Make sure that at the rail ends have a clamp as stopper 3. Preparation of FTPC - Stop gas flow and cooling water circulation - Disconnect gas ; put protection on inlet and outlet, but NOT gas tight to allow chamber to follow the atmospheric pressure - Make short circuit from supply to return gas pipe - Disconnect cooling water. This can be done with underpressure in the system to avoid a water spill. But the connection from supply to return tube should be fast to avoid too much air in the system. - Remove cover plates from RDO boards - Disconnect all cables and glass fibers. 4. Mounting of the installation/removal chariot - You need: The chariot consists of 2 side wings with 1 wheel each and 1 structure with 4 wheels. Plus (metric) screws and tools. - Mount side wings to the chamber - Move beam pipe toward the I.P. with flange at foil window position - Remove lower wheels from structure and mount it to the side wings. - Mount lower wheels (now below the rails!) and safety brackets - Check position of rollers at inner side of rails. They control the horizontal freedom between the rails 5. Removal from fixation points - Loosen and remove nuts and washers from the 2 top fixation points including the small distance shell from inside. - Loose and remove nuts at lower fixation points. There are also 2 small shells with different diameter inside which have to be taken out. - Before moving the chamber check wheels on top and below the rails and make sure that all safety brackets are installed. - Pull out the chamber slowly and watch on both sides and ends that nothing is in the way. - Now you can remove pairs of special washers from the top fixation points. - Move chamber to a position that there is a gap of 10-15 cm between the front window and the beam pipe flange. 6. Lifting down from the rails - Attach the short "FTPC-sling" to the crane fixture and a 10' sling from there to the hook. Otherwise the hook can not go close enough to the magnet. - Make sure that the fixture is hanging vertical by selecting the appropriate holes. - Remove nuts and washers from fixture and insert the orange plastic parts from outside into the lower fixation holes. - Bring fixture carefully in correct position and slide bolts into the fixation holes and secure them with shims and nuts. - Change crane fixture to the extrem outside position and install counter balance weights toward the extrem inward position. - Crane can go up a bit to have some tension on the sling - Remove lower safety brackets and lower wheels. - Crane can lift up now and if everything is correct, the chamber should hang quite horizontal. - Bring chamber to the transport frame and mount it together by using the asymmetric hole pattern to have it well balanced with the frame together.