Anticoincidence scintillation detector for the Signal experiment onboard the spacecraft Interhelioprobe

Measurement results of charged particles (atmospheric muon) detection efficiency of a scintillation detector based on polyvinyltoluene, manufactured for the anticoincidence system of the "Signal" device as part of the scientific apparatus for the spacecraft "Interhelioprobe", are presented. The efficiency measurement technique is based on determination of the ratio of triple and double coincidence of the signals arising as atmospheric mu-mesons pass through the system of detectors. The results of light collection simulation in scintillation detectors by the use of Monte Carlo method are presented.