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Figure 2. (a) HP compressed configuration: in the 2nd floor, the beam passes (1) all the bounce mirrors, (2) time tool compressor (3) the manual delay. Move the stage to the yellow mark: HP compressed. (b) in the 1st floor, use camera TT out to check check the beam pointing. adjust T2 mirror to center the beam. (c) Check and move the delay stage to the position marked by yellow " HP compressed". (d) To check pulse duration, flip in the 1" mirror to send the beam into Spider.