1 The Discussions of the Installation Procedures of Scibar Fiber, PMT, CLR(Gain Monitor), Lower Service Floor & Others Edward Chi June 02, 2006 Fermilab/PPD/MD

2 PMT supt. beam assy.(14), each beam can be mounted to the supt. angle beam individually. Each beam weights ~9.7 lbs. x,y & z adjustment. Shims and mounting hole to angle beam

3 Assuming install the lower removable floor for pulling out all fibers from 64 scibar Layer modules, the distance from top of Scibar modules to the top surface of the floor Grating in y dir. is ~ 13.34”. See floor-lower-scibar ppt for the floor design details.

4 Lower removable grating floor, gain monitors (2)

5

6 Install the first 8 PMT and the related cables and electronics after removing the 1 st module of floor grating

7 Remove more floor grating modules and install more PMTs’ and other electronics

8 Once the last module of the lower floor grating was removed, the scaffolds were Installed as showing for installing the last 16 PMTs’ & the related electronics, the distance between the top surface of the scaffold to the top of the Scibar module in Y dir. is ~ 24”. The middle floor will be also handy for any PMT re-alignment.

9 The view of the PMT assembly after taking off all the scaffolds and their supports.