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Home » Seminars » Development of the TOP counter for the Belle II experiment

Development of the TOP counter for the Belle II experiment

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KMI Topics
2013-10-09 17:30
Kodai Matsuoka
KMI Science Symposia (ES635)

To elucidate a physics beyond the Standard Model, the Belle II experiment plans
to collect 50 ab^{-1} of data at the SuperKEKB e+e- asymmetric energy collider.
For the particle identification in Belle II, the TOP (Time Of Propagation) counter
has been developed. It is a ring imaging Cherenkov detector which utilizes a novel
technics; the Cherenkov ring is reconstructed in the photon detection time and position
plane.
After tremendous studies for more than a decade, a prototype of the TOP counter,
which was almost the same as the final design, was successfully fabricated.
The prototype was tested with a 2 GeV/c positron beam to prove the principle of
the TOP counter.
In this talk, the design and feature of the TOP counter will be presented.
In addition, an expected performance of the TOP counter will be discussed based on
the beam test data.