Figure 4

LPG relaxation phase during the very first 2.5 hours of the 4 stops of the proton beam in comparison. The choice of this observation time window corresponds to the duration of the shortest beam stop (the third OFF reported in Fig. 2(a)).

LPG relaxation phase during the very first 2.5 hours of the 4 stops of the proton beam in comparison. The choice of this observation time window corresponds to the duration of the shortest beam stop (the third OFF reported in Fig. 2(a)).