Fig. 14

Sketch of the arrival signals in a window of 200 ms, when the chopper works at 25 Hz (CRISP). The black identifies the signal passing throw the chopper (O = open), the red colour is used when the neutron beam hits the chopper without passing through (C = close). In this case a strong spike is expected at the detector. One every five pulses is sent to the Target Station 2 (TS2), blue in figure. A low background can be detected