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Mechanical Part of Kaon Detector


Designing of Mechanical Parts of the E-391a System and Fabrication of the Barrel

Tech Area / Field

  • INS-DET/Detection Devices/Instrumentation
  • PHY-PFA/Particles, Fields and Accelerator Physics/Physics

8 Project completed

Registration date

Completion date

Senior Project Manager
Tocheny L V

Leading Institute
Federal State Unitary Enterprise Research and Development Institute of Power Engineering named after N.A.Dollezhal / Center of High Temperature Technology, State Unitary Enterprise, Russia, Moscow

Supporting institutes

  • Joint Institute of Nuclear Research, Russia, Moscow reg., Dubna


  • KEK, Japan, Tsukuba

Project summary

The experiment is approved in the National Laboratory for High Energy Physics (KEK,Japan),which has a goal to detect and measure the possibility of rare neutral Kaon decay.

The particle detectors are placed inside the hermetic cylindrical container – the main barrel, which is vacuumed below 10-3–10-7 torr. At the ends of the main barrel there are two small cylindrical barrels, in the space between them the kaon decays occur. Inside the upstream and the main barrel there are the sandwich – calorimeter (the sets of lead and plastic scintillator plates) mounted on the inner surfaces of the barrel shells. Inside the downstream barrel on the cross – sectional area there is the wall assembled of Cerium 3-Fluoride single crystals.

The neutral kaon beam directed along the axis of this construction and some number of kaons decay on neutral pions an other elementary particles. Then the pions decay on two gamma – quanta, which will be detected by the single crystals. Other particles are detected by calorimeters. The searching decay mode of kaon will be signatured by presence of one neutral pion in the decay area and absence the other electromagnetically interacting particles in calorimeters.

The main goal of the Project is the designing and manufacturing units and components of the E391a installation: three cylindrical hermetically vacuumed barrels with sealing caps having hermetic inlets for cables and vacuum pumps, the inside placed tables on which the additional detectors are mounted, the base with supports for whole structure. Designing of mechanical parts is pided into the following stages: analysis of initial data; working out an engineering documentation with selection of structural materials; conduct of strength analysis of the mechanical parts of the system as well as a technological development of the selected structural and material science solutions.

The main design, dimensions of structures will be provided by specialists from the National Laboratory for High Energy Physics (KEK, Japan), which will serve as a collaborator.


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