7–12 May 2023
Venice, Italy
Europe/Zurich timezone

A space charge forces analytical model for emittance compensation

WEPL133
10 May 2023, 16:30
2h
Sala Laguna

Sala Laguna

Poster Presentation MC5.D03: Calculations of EM fields Theory and Code Developments Wednesday Poster Session

Speaker

Martina Carillo (Sapienza University of Rome)

Description

Space charge forces represent main induced effects in an RF-injector that degrade the beam quality. In this scenario the laser distribution sent on the photocathode acquires an
important role in the emittance compensation process, as the slice analysis shows. A novel model of space charge forces is proposed for bunch with arbitrary charge distribution to derive expressions of self-induced forces. As the performance of the fields near the cathode is under present analysis, we can investigate use of this model in low charge regime. Further, the model has been benchmarked with the behavior of the distributions present in the literature and studied for new ones. It has also been applied for the study of the optimization of a C-band hybrid photoinjector now being commissioned, thus explaining the factor two reduction of the emittance observed at the exit of the gun by changing the initial distribution at the cathode.

Funding Agency

This work supported by DARPA GRIT under contract no. 20204571

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Primary author

Martina Carillo (Sapienza University of Rome)

Co-authors

Luigi Palumbo (Sapienza University of Rome) James Rosenzweig (University of California, Los Angeles) Bruno Spataro (Istituto Nazionale di Fisica Nucleare) Mauro Migliorati (Istituto Nazionale di Fisica Nucleare - Sez. Roma 1) Andrea Mostacci (Sapienza University of Rome) Lucia Giuliano (Istituto Nazionale di Fisica Nucleare) Luigi Faillace (Istituto Nazionale di Fisica Nucleare) Enrica Chiadroni (Sapienza University of Rome) Fabio Bosco (La Sapienza University of Rome)

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