Purpose of BBC software

• Provide Z-vertex position and Time zero

BBC / North

BBC / South

Vertex position

LN

LS

Time Zero = ( T(North) + T(South) ) / 2 - (Mean Transit time).
Z-vertex = ( T(North) - T(South) ) / 2 x c (Light velocity).

T(North)

T(South)

The timing T(North) , T(South) is measured by 64 PMTs.

(BBC corresponds to 64 PMTs. )

How to get single value from multiple measurement?

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