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![[Figure 2]](uy5003fig2mag.jpg)
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Figure 2
HAMP intra-train non-linearity (SASE3 at 780 eV with 120 pulses per train, Kr gas target, HAMP at −850 V, repeller at 6000 V). Intra-train non-linearity appears only for >10 pulses per train and only if the HAMP signal is >2 mV. In this case, HAMP voltage was used which leads to 6 mV peaks. The XGMD single-shot pulse energies were calibrated to microjoules whereas the HAMP single shots were kept in arbitrary units (because of the non-linearity). (a) Different correlation lines and slopes for pulses of different intra-train pulse numbers (color code). (b) Same settings as in (a), but with decreasing pulse energies during the DAQ run using the SASE3 gas attenuator. At low pulse energies, where the HAMP peaks are again <2 mV, the HAMP response is linear and the same for all intra-train pulse numbers. |
![[Figure 2]](uy5003fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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