Figure 8
Schematic of `sequenced slicing' (a) and the APD signal (b) without sequencing but at 6 kHz at the Ni-L edge measured at the third harmonic in elliptical mode (shift setting was 25 mm). A stationary oscillating `halo' in the signal (negative record) remains if there is no sequence mode. The inset displays the transverse damping of the signal (positive record) in the 1 kHz case demonstrating that at 0.5 ms (i.e. 2 kHz) the signal is already sufficiently reduced such that the next shot may occur suggesting that hopping between three hybrid bunches at 6 kHz will lead to a background close to the 1 kHz case (see text). |