ORKA Calendar , Presentations , Technical Notes , E949/KTeV Papers and Theses , Redmine code repository

Welcome to ORKA!

ORKA is a rare kaon decay experiment to be performed at Fermilab, using the CDF magnet ( CDF hall ) , with primary beam from the Main Injector operating at 95 GeV. ORKA seeks a high precision measurement (~5%) of the branching ratio for the reaction K+→π+νν which occurs at the level of one in 10 billion decays and is highly sensitive to new physics effects. The experiment will study a rich array of other processes. ORKA employs a low energy stopped kaon beam and builds on the techniques developed by the BNL E949 and E787 experiments which made the initial observations of K+ → π+ ν ν. ORKA is scoped to run for three to five years and obtain a sample of >1000 K+ → π+ ν ν decays.

Description of the experiment

CDF COT removal to allow ORKA installation
ORKA detector schematic diagram CDF COT removal (the ORKA detector fits within the COT)
The table below shows the expected event yields or branching ratio limits to be achieved by a five-year ORKA run compared to current results.

K+→π+νν Results from BNL E949


General Information

Detector Information

Related Links

Last update: November 26, 2013
Steve Kettell, BNL (kettell@bnl.gov)
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