Accel Order completed for a 1.1m plano and 1.1m cylindrical mirror

Accel have accepted a pair of mirrors for the Delta faculty after exhaustive testing on Crystal Scientific(UK) LTP.

Tests were performed by Accel Staff using our LTP over a 3 Day period, the results were very encouraging  realising

<3 uradians over 1m with the mirrors mounted in the benders and tested over the full range of operation of the benders.  The mirrors were bent to there minimum radii and repeatedly relaxed and re-bent.  Surface roughness were measured on both In-House systems give values of 2.5-3.5A over the optical area.

Daresbury 1.2M ULE Mirror Completed ( Cr over coat to reduce Pt edges)

A 1.2m x 200mm wide mirror has been accepted by Bob Billsborough of Daresbury lab after a custom coating of a 6nm thick Chromium layer was coated on top of a 50nm Pt layer.  Slope errors were 3uradians with surface roughness of 3A.

CLS Accepts 9 Zerodur Mirrors of the IR beamlines

After a long road of development the CLS has now accepted a package of mirrors which included 2 glidcop, 2 cylindrical mirrors and 5 plano mirrors.  The glidcop mirrors were produced entirely in-house Ni coated with a Gold overcoat.  The cylindrical mirrors were produced with a new pitch polishing process, while the plano mirrors were both optical flat to  lambda/30 (measured on their new Zygo Verifire system) but also having slope errors below 1.5 uradians.