Figure 1
Current photon-flux conditions in the tender X-ray energy range at the ACT experiment. Synchrotron radiation beam path conditions from source to I0 monitor (ionization chamber): 2.5 GeV storage-ring electron energy, average electron-beam current ≃ 120 mA, 2 mm (h) × 1 mm (v) front-end (white beam) slit aperture, cylindrical collimating first Si mirror, 250 µm Be vacuum protection plus 100 µm graphite thermal-protection window, Si〈111〉 DCM crystal pair, toroidal focusing second Si mirror, 25 µm KAPTON window and synchrotron radiation beam spot size ≃ 1 mm × 1 mm. |