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Emittance estimation by an ion optical element with variable focusing strength and a viewing target
J Mäder1, J Rossbach, F Maimone
1GSI GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany. j.maeder@gsi.de
The Review of Scientific Instruments
|March 3, 2010
Summary
This study presents a method to estimate ion beam emittance using three profile measurements. This technique provides an upper limit for homogeneous beams, simplifying emittance calculations.
Area of Science:
- * Physics
- * Accelerator Physics
- * Beam Optics
Background:
- * Ion beam emittance is a critical parameter in accelerator physics.
- * Traditional methods for emittance measurement can be complex and time-consuming.
- * Accurate emittance determination is essential for optimizing beam quality and performance.
Purpose of the Study:
- * To develop and present a simplified method for estimating ion beam emittance.
- * To validate the method using measurements from the SECRAL ion source.
- * To provide an upper limit estimation for beam emittance under specific conditions.
Main Methods:
- * Utilizing three linear independent profile measurements of the ion beam.
- * Employing a linear focusing element with varying focusing strengths.
- * Analyzing the relationship between beam radius and focusing strength to determine beam parameters.
Main Results:
- * Successfully estimated the emittance of an extracted ion beam.
- * Demonstrated that three profile measurements are sufficient for a first-order estimation.
- * Calculated Twiss parameters (alpha, beta, gamma) and emittance (epsilon) using the proposed method.
Conclusions:
- * The presented method offers a practical approach for estimating ion beam emittance.
- * The technique is particularly useful for homogeneous, nonfilamented beams.
- * This method simplifies emittance measurement, contributing to improved beam diagnostics in particle accelerators.
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