     fileprivate var totalEventNumber: CUnsignedLongLong = 0
     fileprivate var firstFissionAlphaTime: CUnsignedLongLong = 0 // время главного осколка/альфы в цикле
     fileprivate var neutronsSummPerAct: CUnsignedLongLong = 0
+    fileprivate var neutronsBackwardSummPerAct: CUnsignedLongLong = 0
     var files = [String]()
     fileprivate var currentFileName: String?
     fileprivate var neutronsMultiplicityTotal = [Int : Int]()

        search(directions: directions, startTime: firstFissionAlphaTime, minDeltaTime: 0, maxDeltaTime: maxNeutronTime, useCycleTime: false, updateCycleEvent: false) { (event: Event, time: CUnsignedLongLong, deltaTime: CLongLong, stop: UnsafeMutablePointer<Bool>) in
            if self.dataProtocol.Neutrons == Int(event.eventId) {
                self.neutronsSummPerAct += 1
            }
        }
    }

    
    func clearActInfo() {
        neutronsSummPerAct = 0
        neutronsBackwardSummPerAct = 0
        fissionsAlphaFrontPerAct.removeAll()
        fissionsAlphaBackPerAct.removeAll()
        gammaPerAct.removeAll()
