Kevin D Crowley, Peter Dow, Jordan E Shroyer, John C Groh, Bradley Dober, Jacob Spisak, Nicholas Galitzki, Tanay Bhandarkar, Mark J Devlin, Simon Dicker, Patricio A Gallardo, Kathleen Harrington, Jeffrey Iuliano, Bradley R Johnson, Delwin Johnson, Anna M Kofman, Akito Kusaka, Adrian Lee, Michele Limon, Federico Nati, John Orlowski-Scherer, Lyman Page, Michael Randall, Grant Teply, Tran Tsan, Edward J Wollack, Zhilei Xu, Ningfeng Zhu
We present the design and measured performance of a new carbon fiber strut design that is used in a cryogenically cooled truss for the Simons Observatory small aperture telescope. The truss consists of two aluminum 6061 rings separated by 24 struts. Each strut consists of a central carbon fiber tube fitted with two aluminum end caps. We tested the performance of the strut and truss by (i) cryogenically cycling and destructively pull-testing strut samples, (ii) non-destructively pull-testing the final truss, and (iii) measuring the thermal conductivity of the carbon fiber tubes...
May 1, 2022: Review of Scientific Instruments