CMS Endcap Muon System Tests of Rasnik/Straight Line Monitor R, phi, Z Alignment Linking using MPI Transparent Amorphous Silicon Optical Beam Position Sensors, Laser/LED Z Distance Sensors, and R Wire Displacement Potentiometers

Prototype CMS Endcap Muon System Linking Rasnik and Pinhole Straight Line monitor lines using semi transparent aSi:H optical sensors have been tested at Fermilab using both Laser and Laser diode module beams over the required dimensions of CMS. The experimental results indicate certain optical effects while confirming the configuration and acceptable long term resolutions. The test setup has also included the Z linking via laser diode and LED distance sensor measurements of gaps between a MAB reference and Z tubes, plus Radial wire potentiometers to transfer the R coordinate to the outer Cathode Strip Chambers. These experimental results can be combined with previous studies to simulate the performance of the total Endcap Position Monitoring System.