Strategies to minimize beam and sample vibration-induced instabilities at the microfocus MX XAIRA beamline at ALBA

Abstract The performance of microfocus beamlines, and ultimately the quality diffraction data, is very sensitive to vibrations affecting optical elements sample stages holder. We report here strategies applied in design MX XAIRA beamline at ALBA synchrotron mitigate effects two relevant sources vibrations: circulation LN 2 flow evacuate thermal load on monochromator cryocooling gas stream being blown sample. internal shape size cooling pads that clamp optics have been designed minimize turbulences liquid nitrogen while maximizing heat transfer. Computational Fluid Dynamics (CFD) simulations some preliminary metrology tests are presented. Besides, end-station, cryo-cooler blowing typically a 5-10 L/min or helium 100K sample, inducing micron range. optimal geometrical configuration between holder cryocooler has assessed by means CDF tests.