1. Status of FMS Refurbishment
Tasks to be done by BNL:
Stephen Trentalange/Mriganka Mondal/Igor Alekseev/Dmitry Svirida/YuXi Pan
Testing of PMTs/Bases: 685 working channels - completed 100%
Wrapping of working FMS small cells(360) completed 100%
Recovery of cables/magnetic shields(684) - completed 100%
Overestimated recovery effort: est completed 1 person week
Wrapping of working FMS large cells(104) -2 person-weeks
Gluing/Wrapping of broken small cells(90) -2 person-weeks
Mounting Fixtures for Large Cells(684) person-weeks
Tasks to be done by PSU
Steve Hepplemann/Christopher Dilks/Tyler Boone/Dan Marshall/Yaokun Situ
Machining of Fermilab Bases(684) -3 person-weeks
Construction of plastic caps 684/20/day -7 person-weeks
Soldering/gluing/cable-mounting bases 684/10/day -14 person-weeks
Total Manpower: 41 person-weeks
Tasks on time (~25% completed/25% time)/Budget revised lower($ > $23100)

2. Canceled
Completed

3. FMS Work Area Annealing lead glass, cleaning
and wrapping of lead glass in
0.001”mylar
Recovery of expansion rings, signal and HV cables, inner and outer magnetic shields

4. Radiation Damage to Lead Glass
LED pulse
amplitude
Run 12
Run 13
Day
Day
Damage inversely proportional to distance from beamline
Radiation hardened lead glass positioned closest to beamline
Problem much less for large cells
Estimated lifetime of detector in 500 GeV beam ~1 month

5. Radiation Damage/Exposure to Sunlight
0 hours hours hours
Large Cell
Small Cell
Relative Absorption
Relative Absorption
Wavelength (nm)
Wavelength (nm)