OKA (experiment)

OKA (Russian: OKA — OPYTY S KAONAMI, literal translation “Observations of KAons”) is a particle physics detector experiment at the U-70 accelerator in the Institute for High Energy Physics located in Protvino near Moscow (Russia). OKA is specialized experiment with separated charge kaons beam.

Superconducting high radio-frequency separator produces a beam of charged kaons intensity (4 ÷ 6) · 106 K for a cycle with momenta 12.5 and 18 GeV. Experimental complex includes the decay volume with veto system, the wide-aperture magnetic spectrometer consists of a set of proportional chambers, straw tubes, drift tubes and hodoscope, the Cherenkov counters for charged particle identification, the electromagnetic calorimeter known as GAMS-2000 detector, the total absorption hadron calorimeter and the muon counters.

The research program of the experiment has the following items:

The sensitivity of the OKA experiment will enable to observe decays with branching fractions of about 10−8.

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