Aluminium lenses

2 boxes of Aluminium lenses are available on the beamlime:

• A small box of 102 lenses
• A long box of 173 lenses

It is possible to combine both boxes to get 275 lenses. The focal distance can be estimated from this website :  http://purple.iptm.ru/xcalc/xcalc_mysql/crl_par.php#

Theses lenses are used to focus high energy beams (>50 keV) to a few microns (~1.5 to 5).