Welcome to the E831 art gallery page

A nice collection of E687 event displays (featuring details of fully reconstructed double-charm events).

Take a deep FOCUSing look at FOCUS...

Pictures of the E831 spectrometer

• A birds eye view of the E687 spectrometer
• A detail of the microvertex hut (right), the M1 analysis magnet (center), the C1 and C2 Cerenkov counters (center) and part of the Outer Electomagnetic Calorimeter (OE) (left)
• A detail showing the C3 Cerenkov counter (right), the Inner Electromagnetic Calorimeter (IE ) and the Hadron Calorimeter (HC) (center), the Inner Muon Counters (IMU) (left)
• Another detail showing the OE calorimeter
• Another detail showing the Outer Muon Counters (OMU)
• Another page with lots of pictures. Takes a while to load.

Pictures of the microvertex detector

• The E831 microvertex detector
• Another picture (with a different light source)
• Still another picture (from a different perspective)
• The clean room of the microvertex.
• Piero in the clean room
• Sandra Malvezzi (ah ah ah...)

Pictures of the E831 tagging system

• The tagging system (1)
• The tagging system (2)

Pictures of the Crystal Radiator

• Picture of the whole assembly in the beam line
• Blow up of the Si crystal in the goniometer