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@inproceedings{rosily:ipac2021-mopab321,
author = {S. Rosily and B. Dikshit and S. Krishnagopal},
title = {{Schlieren Imaging for Flow Visualisation of Gas Jet in Vacuum for Accelerator Applications}},
booktitle = {Proc. IPAC'21},
pages = {989--992},
eid = {MOPAB321},
language = {english},
keywords = {vacuum, controls, laser, solenoid, linac},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB321},
url = {https://jacow.org/ipac2021/papers/mopab321.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB321},
abstract = {{Schlieren imaging was explored for flow visualising of a gas jet in vacuum for beam profile monitor application. In supersonic gas jet based beam profile monitors, the high density jet flows through various differentially pumped skimmer stages before being shaped into a sheet. Schlieren imaging is a well known technique used in aerodynamic studies to visualise gas flow. This technique is explained in the paper along with a gist of other flow visualisation techniques. An Z-type schlieren imaging setup used to view the high density flow features of a pulsed supersonic gas jet inside vacuum is described in detail. Flow around a Pitot probe in supersonic flow was simulated and the resultant density profile obtained was compared with the image obtained using schlieren imaging. The flow features including a detached shock around the tip of the probe was observable at medium and high vacuum after processing the image. Image processing algorithms and tools useful for this application are also discussed.}},
}