INSTALLATION SCHEDULE BREAKDOWN



1) Open Enclosure and prepare area.

	1) Remove black curtain on +Z,inner side of magnet
	2) Remove all black tape used to seal inner and outer
	   spectrometer and octagon backsides on the -Z side.
	3) Remove all enclosure panels on the magnet, this includes
	   the extension for the +1Z Ring counter.
	   The temporary window attached to the extension and the
	   beampipe protection should also be removed.
	4) Remove black plastic window on -Z side of octagon.


2) Remove Octagon structure

     	1) disconnect octagon crates from the power supply LV and HV 
	   and Latchup cable
     	2) take out octagon crates, disconnect cooling tubes and take 
	   out the flow meters with tubes. 
     	3) the octagon frame will  be removed following the procedure       
   	   described in 'Octagon Installation Procedure'.


3) Setup Spectrometer in tunnel

	See points I, II and III of document 'PHOBOS Spectrometer
	Detector Installation Procedure'.


4) Small plate mounting on rails

	See point IV through VIII of document 'PHOBOS Spectrometer
	Detector Installation Procedure'.


5) Cable and cooling connections

	- connection of all C to D cables, which connect all silicon readout
  	  hybrid to their FEC port. A total of 120 cable connection need to be
  	  made
	- due the tight space constaints near the silicon detectors, all
  	  cables need to be folded and secured in place carefully


6) Cooling test and roll in

	- connections between cooling water distribution and module support 
  	  need to be made (total of 28 connections)
	- while still accessible, the cooling connections are tested for leaks
	- once cable and cooling connections are verified, the support
  	  structure is slowly inserted in the magnet on rails
	- areas close to beam pipe and silicon need to be visible during the
  	  roll-in to avoid potential interferences
	- set up temporary enclosure of magnet to keep light out to
	  facilitate testing


7) Chip Functionality Test

	- this test verifies -a- the low voltage power supply connection to
	  the detector modules -b- shorts and open connections in the readout
	  cables
	- it requires the detectors to be in place and tunnel lights to be
	  switched of5f, i.e. no possibility for parallel work in the tunnel 
	  area
	- the test requires the operation of the cooling system


8) Octagon Setup in Tunnel

	- remove temporary enclosure of magnet
	- the octagon will be transported to the tunnel following the procedure 
	  'Installation of Octagon Detector'  
	- the octagon frame full installation will be on the table at +Z


9) Install Octagon on rails

	 - the octagon will be installed  on rail following the procedure  
	   'Installation of Octagon detector'


10) Cable and Cooling connections

	- install flow meters  and the big tubes which go to the valve 
	  located on the front of the magnet, 
	- connect cooling tubes to the frame
	- install the octagon crates and connect cables to the power 
	  supplies LV and HV
	- connect Latchup cable
	- install temporary enclosure around magnet to facilitate
	  readout test with bias (i.e. enclosure should be light tight


11) Readout test with full bias

	- this tests verifies the readout functionality of FE chips and the
	  proper operation of the silicon sensor
	- the detector will be on full bias and tested using the calibration
	  system
	- the test requires the detector to be light tight, i.e. the enclosure
	  to be fully mounted and sealed


12) +1Z Ring Installation

	- install one ring counter inside the enclosure on the +Z side
	  of the magnet


13) Rings Installation

	- all ring counters will be installed and connected to FECs
	- temporary enclosures should be installed


14) Readout test with full bias

	- Test of the Octagon/Vertex, Spectrometer Arms and Ring
	  counters with full bias applied to the system over
	  several hours.

15) Debug day

	- due to the high level of multiplexing in our silicon detector, a
  	  faulty cable connection will reneder a large part of the detector
  	  unoperational
	- the cable connection are mechanically very fragile due to their
  	  small size. To our up-tp-date experince up to 10 % of the cable 
  	  need further inspection or replacement after the initial connection 
	  is made
	- cable faults typically result in shorted supply connections or
  	  failure in the chip addressing during the readout
	- inspecting or replacing cables requires us to remove part of the
  	  enclosure and re-seal it after the inspection is finished.  
	- decision if final enclosure needs to be in place at this point
	  depends on how long it will take until survey takes place.
	  If this will happen within about a week then the temporary
	  enclosures can stay in place, otherwise a more permanent
	  enclosure should be considered.