LIGO Clean and Bake Methods and Procedures

Notes and Changes:: v26: Posted Feb 2025 by Calum Torrie. Refer to v25 for full list of updates. v25: Previous list of full updates. v24-v1: refer to previous revisions.

Pending Updates:
(1) Alumina grade 99 or 98 (like these spacers, D1102007) - C&B as SSTL i.e. 200 deg C (but no ultrasonic).

(2) Add Material Datasheets - https://www.morgantechnicalceramics.com/en-gb/datasheets/material-datasheets/

(3) Question on sapphire processing e.g. sapphire balls - process as SSTL (not as sapphire prisms).

(4) Review sapphire prisms callout??

(5) (i) PARTS START AS GOLD PLATED BERYLIUM COPPER Material from Accu-Glass https://www.accuglassproducts.com/specialty-connectors/push-line-connectors/line-0072 (ii) As such wear gloves at all times when handling, wash parts with soap and water to remove any residual dust. (iii) Locally do not machine, these parts are made from Beryllium copper. Discuss material with vendor if asking to machine. (iv) BeCu SDS attached to D2400279.

Source doc: https://docs.google.com/document/d/1VJpxPFlaEPhA_iOG3o3b25K5RG5gYYRi/edit

LIGO Document E960022-v26