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. 2013 May 8;20(Pt 4):567–580. doi: 10.1107/S0909049513009436

Figure 11.

Figure 11

RMS thermal slope error of a LN2-cooled silicon crystal under variable heat load at different Bragg angles for the ESRF UPBL6 beamline project. The RMS thermal slope is calculated over the central cone illuminated length on the crystal surface (half footprint). Working points at I = 200 mA (the present most common operation electron beam current at the ESRF) are also shown as circle points.