European Synchrotron Radiation Facility, 38043 Grenoble Cedex, France.
J Synchrotron Radiat. 2011 Mar;18(Pt 2):125-33. doi: 10.1107/S0909049510044365. Epub 2010 Dec 21.
This paper describes a tunable X-ray focusing apparatus, referred to as a transfocator, based on compound refractive lenses. By varying the number of lenses in the beam, the X-ray energy focused and the focal length can be varied continuously throughout a large range of energies and distances. The instrument can be used in both white and monochromatic beams to focus, pre-focus or collimate the beam. The transfocator can be used with other monochromators and/or other focusing elements, leading to significant increases in flux. Furthermore, the chromatic nature of the focusing means the transfocator suppresses harmonics and can also be used as an extremely high flux broad-band-pass monochromator. These devices have been installed in the first optics and second experimental hutches at the ID11 beamline at the ESRF.
本文介绍了一种基于复折射透镜的可调谐 X 射线聚焦装置，称为变焦距器。通过改变光束中的透镜数量，可以在很大的能量和距离范围内连续改变聚焦的 X 射线能量和焦距。该仪器可用于白光和单色光束，以聚焦、预聚焦或准直光束。变焦距器可与其他单色器和/或其他聚焦元件一起使用，从而显著增加通量。此外，聚焦手段的色差使得变焦距器能够抑制高次谐波，也可用作极高通量宽带通单色器。这些设备已安装在 ESRF 的 ID11 光束线的第一光学和第二实验小屋里。
