THERMAL STABILITY OF LENSES IN THE BEAM

Water cooled beryllium lenses withstand the white beam of an undulator. Note that the temperature of beryllium lenses should not exceed about 300°C.

Water cooled CRL
Water cooled beryllium CRL at ESRF (ID10)
Temperature profile for a Water cooled CRL
Temperature-time profile in white beam at ID10 ESRF:
ca. 100 W/mm², total 40 W; 12 Be lenses with R = 200 µm