JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Swain, C. AU - Apsimon, Ö. AU - Salehilashkajani, A. AU - Welsch, C.P. AU - Wolfenden, J. AU - Zhang, H.D. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - Improvements on the Modified Nomarski Interferometer for Measurements of Supersonic Gas Jet Density Profiles J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - For supersonic gas jet based beam profile monitors such as that developed for the High Luminosity Large Hadron Collider (HL-LHC) upgrade, density profile is a key characteristic. Due to this, non-invasive diagnostics to study the jet’s behaviour have been designed. A Nomarski interferometer was constructed to image jets 30 um to 1 mm in diameter and study changes in their density. A microscope lens has been integrated into the original interferometer system to capture phase changes on a much smaller scale than previous experiments have achieved. This contribution presents the optimisation and results gained from this interferometer. PB - JACoW Publishing CP - Geneva, Switzerland SP - 235 EP - 238 KW - laser KW - vacuum KW - experiment KW - focusing KW - diagnostics DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-MOPORI06 UR - https://jacow.org/linac2022/papers/mopori06.pdf ER -