LVBOX finger Power Supply (fLVPS) Components
The finger power supply, called LVBOX, is mounted in the vicinity of Tile Calorimeter detector modules (drawers) inside so called FINGERS. Each LVBOX contains eight independent DC/DC converters - bricks (3.3VDIG, +5VMB, -5VMB, +5VDIG, +15VMB, +5VHV, +15VHV, -15VHV), an ELMB Motherboard, an ELMB module, 200VDC distribution Fuse-Board, internal cable set, and chassis and water cooled heatsink. The ELMB Motherboard and ELMB module are connected to DC/DC converters and permit a remote PC monitoring of their behavioral parameters (temperatures, Iin, Iout, Vin, Vout, DIG and MB side sense line voltages) and set trimming of Vout. The Start-up sequence of LVBOX is carried out in 3 groups of bricks. The HV or DIG side brick group shutdowns are triggered by most critical power lines: -5VMB, +15VMB, and -15VHV. The LVBOX is exposed to radiation and magnetic field of the ATLAS detector. The Tile LVPS system is computer managed by the Detector Control System (DCS) software through a CAN Bus communication with the local ELMB module of each power supply. Each LVBOX of the Tile detector electronics has to deliver an average power of 300W. Production of final 256 units v.6.5.4 started at CERN in January 2007.
