International
Tables for Crystallography Volume C Mathematical, physical and chemical tables Edited by E. Prince © International Union of Crystallography 2006 
International Tables for Crystallography (2006). Vol. C, ch. 5.3, p. 534


Figure 5.3.3.18
Synchrotron radiation, SR, from the bending magnet incident on the Si(111) doublecrystal monochromator and, after four reflections from the monolithic monochromator (0.1410 nm), impinges on sample Si(444). Two diffractions are recorded at the photodiode detectors, PIN1 and PIN2. The ω_{1} and ω_{2} values of the crystal positions are recorded using a Heiden height encoder. 