Experimental testing of a prototype cantilevered liquid-nitrogen-cooled silicon mirror

Cutler, G.; Cocco, D.; Bentley, B.; Cervantes, M.; Chavez, P.; Chrzan, J.; DiMaggio, S.; Hussey, R.; Ilmberger, J.; Lindsay, J.; Lizotte, E.; McCombs, K.; Morton, S.; Paulovits, G.; Pearson, K.; Redding, C.; Smith, N.; Tokunaga, K.; Zehm, D.; DiMasi, E.; Padmore, H.

doi:10.1107/S1600577522010700

Journal of Synchrotron Radiation Journal of
Synchrotron Radiation

IUCr IT WDC

home archive editors for authors for readers submit open access

view article

Figure 12
We measured the height error of the mirror after (a) assembly with the manifold and without a metrology window, (b) installation of a 9.4 mm-thick λ/4 window, (c) pumping down the vacuum chamber to 10⁻⁸ Torr, (d) cooling the mirror to 87 K, (e) switching the metrology window to a 25.4 mm-thick λ/20 window, (f) pumping down the vacuum chamber to 10⁻⁸ Torr, (g) cooling the mirror to 98.75 K. Note that the measurements shown in (a) and (e) were made with a thermocouple clamped to the mirror substrate; the clamp is visible as a vertical band. Note also that the measurements shown in (f) and (g) include a reference mirror to separate window effects from mirror height error.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 30| Part 1| January 2023| Pages 76-83

https://doi.org/10.1107/S1600577522010700

Open

access

Follow J. Synchrotron Rad.

Search IUCr Journals		doi		Advanced search
Author		volume	page