Advanced measurements at the SPARC photoinjector

A. Cianchi, D. Alesini, A. Bacci, M. Bellaveglia, R. Boni, M. Boscolo, M. Castellano, L. Catani, E. Chiadroni, S. Cialdi, A. Clozza, A. Cook, L. Cultrera, G. Di Pirro, A. Drago, M. Dunning, A. Esposito, D. Filippetto, M. Ferrario, P. FrigolaV. Fusco, A. Gallo, G. Gatti, A. Ghigo, L. Giannessi, M. Incurvati, C. Ligi, M. Migliorati, A. Mostacci, P. Musumeci, E. Pace, L. Palumbo, L. Pellegrino, M. Petrarca, M. Quattromini, R. Ricci, C. Ronsivalle, J. Rosenzweig, A.R. Rossi, C. Sanelli, L. Serafini, M. Serio, F. Sgamma, B. Spataro, F. Tazzioli, S. Tomassini, C. Vaccarezza, M. Vescovi, C. Vicario

Research output: Contribution to conferencePaper

Abstract

The goal of the first stage of the SPARC commissioning was the optimization of the RF-gun settings that best match the design working point. This entailed detailed study of the emittance compensation process providing the optimal value of emittance at the end of the linac. For this purpose an innovative beam diagnostic, the emittance-meter [1], consisting of a movable emittance measurement system, was conceived and built. More than a simple improvement over conventional, though non-trivial, beam diagnostic tools this device defines a new strategy for the characterization of new high performance photo-injectors. The emittance meter allows measurements at different locations along the beamline of the evolution of important beam parameters both in longitudinal and in the transverse phase spaces. These parameters, which include such as beam sizes, energy spread and rms transverse emittances, are measured in a region where the space-charge effects dominate the electron dynamics. The quality and the quantity of the data allowed a clear reconstruction of the phase space evolution. We report also the first experimental observation of the double emittance minima effect up on which the optimized matching with the SPARC linac is based.
Original languageEnglish
Publication statusPublished - 2007
Externally publishedYes
Event8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007 - , Italy
Duration: 1 Jan 2007 → …

Conference

Conference8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007
CountryItaly
Period1/1/07 → …

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Cianchi, A., Alesini, D., Bacci, A., Bellaveglia, M., Boni, R., Boscolo, M., ... Vicario, C. (2007). Advanced measurements at the SPARC photoinjector. Paper presented at 8th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, DIPAC 2007, Italy.