JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{shin:ibic2023-we3c02,
author = {B.K. Shin and M. Chung and G. Hahn and C.K. Sung},
title = {{Development of a Precise 4d Emittance Meter Using Differential Slit Image Processing}},
% booktitle = {Proc. IBIC'23},
booktitle = {Proc. 12th Int. Beam Instrum. Conf. (IBIC'23)},
eventdate = {2023-09-10/2023-09-14},
pages = {318--320},
paper = {WE3C02},
language = {english},
keywords = {emittance, simulation, experiment, electron, background},
venue = {Saskatoon, Canada},
series = {International Beam Instrumentation Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {12},
year = {2023},
issn = {2673-5350},
isbn = {978-3-95450-236-3},
doi = {10.18429/JACoW-IBIC2023-WE3C02},
url = {https://jacow.org/ibic2023/papers/we3c02.pdf},
abstract = {{We have developed a highly precise 4D emittance meter for X-Y coupled beams with 4D phase-space (x-x’, y-y’, x-y’, y-x’) which utilizes an L-shaped slit and employs novel analysis techniques. Our approach involves two types of slit-screen image processing to generate pepper-pot-like images with great accuracy. One which we call the "differential slit" method, was developed by our group. This approach involves combining two slit-screen images, one at position x and the other at position x + the size of the slit, to create a differential slit image. The other method we use is the "virtual pepper-pot (VPP)" method, which combines x-slit and y-slit images to produce a hole (x,y) image. By combining that hole images, we are able to take extra x-y’ and y-x’ phase-space. The "differential slit" method is crucial for accurately measuring emittance. Through simulations with 0.1 mm slit width using Geant4, the emittance uncertainties for a 5 nm rad and 0.2 mm size electron beam were 5% and 250% with and without the "differential slit", respectively. In this presentation, we provide a description of the methodology, the design of slit, and the results of the 4D emittance measurements.}},
}