Author: Salehilashkajani, A.
Paper Title Page
MOPORI06 Improvements on the Modified Nomarski Interferometer for Measurements of Supersonic Gas Jet Density Profiles 235
 
  • C. Swain, Ö. Apsimon, A. Salehilashkajani, C.P. Welsch, J. Wolfenden, H.D. Zhang
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • Ö. Apsimon, A. Salehilashkajani, C. Swain, C.P. Welsch, J. Wolfenden, H.D. Zhang
    The University of Liverpool, Liverpool, United Kingdom
  
  Funding: This work is supported by the AWAKE-UK phase II project funded by STFC, the STFC Cockcroft core grant No. ST/G008248/1 and the HL-LHC-UK phase II project funded by STFC under Grant Ref: ST/T001925/1.
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. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPORI06  
About • Received ※ 14 August 2022 — Revised ※ 24 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 01 September 2022
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