PAC2013 - List of Authors (Frigola, P.)

Paper	Title	Page
MOPHO25	Removal of Residual Chirp in Compressed Beams Using a Passive Wakefield Technique	291
	M.A. Harrison, G. Andonian, T.J. Campese, P. Frigola, A.Y. Murokh, F.H. O'Shea, M. Ruelas RadiaBeam, Santa Monica, USA M.G. Fedurin BNL, Upton, Long Island, New York, USA
	Funding: This is experiment is supported by an ongoing DOE Phase I Small Business Initiative for Research (SBIR) Grant, number DE–-SC0009550. The removal of residual chirp in XFELs is of paramount importance for efficient lasing. Although current S-band XFELs remove the unwanted residual chirp using off-crest acceleration after the final bunch compressor, this technique is not possible for XFELs with soft X-ray lines as there are no further accelerating structures. The off-crest dechirping technique is also expensive for future superconducting XFELs. In response, RadiaBeam Systems presents its work, building upon the theoretical work of Bane and Stupakov, in RF-free residual chirp mitigation using only passive techniques. Beam-induced longitudinal wakefields are produced with opposing corrugated plates which allow for an entirely RF-free chirp removal. Theory, engineering, and experimental results are presented. K.L.F. Bane, G. Stupakov, Nucl. Inst. Meth. 690 (2012) 106-110

TUPSM27	High-power Tests and Initial Electron Beam Measurements of the New High-gradient Normal Conducting RF Photoinjector System for the Sincrotrone Trieste	694
	L. Faillace, R.B. Agustsson, H. Badakov, P. Frigola, A. Verma RadiaBeam, Santa Monica, USA F. Cianciosi, P. Craievich, M. Trovò Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy A. Fukasawa, J.B. Rosenzweig, A. Yakub UCLA, Los Angeles, USA
	Radiabeam Technologies, in collaboration with UCLA, presents the development of a high gradient normal conducting radio frequency (NCRF) 1.6 cell photoinjector system, termed the Fermi Gun II, for the Sincrotrone Trieste (ST) facility. Designed to operate with a 120MV/m accelerating gradient, this single feed, fat lipped racetrack coupler design is modeled after the LCLS photoinjector with a novel demountable cathode which permits cost effective cathode exchange. Full overview of the project to date, installation, high-power RF conditioning and initial electron beam emittance measurements at Sincrotrone Trieste will be discussed along with basic design, engineering and manufacturing.

Paper

Title

Page

Removal of Residual Chirp in Compressed Beams Using a Passive Wakefield Technique

291

M.A. Harrison, G. Andonian, T.J. Campese, P. Frigola, A.Y. Murokh, F.H. O'Shea, M. Ruelas
RadiaBeam, Santa Monica, USA
M.G. Fedurin
BNL, Upton, Long Island, New York, USA

Funding: This is experiment is supported by an ongoing DOE Phase I Small Business Initiative for Research (SBIR) Grant, number DE–-SC0009550.
The removal of residual chirp in XFELs is of paramount importance for efficient lasing. Although current S-band XFELs remove the unwanted residual chirp using off-crest acceleration after the final bunch compressor, this technique is not possible for XFELs with soft X-ray lines as there are no further accelerating structures. The off-crest dechirping technique is also expensive for future superconducting XFELs. In response, RadiaBeam Systems presents its work, building upon the theoretical work of Bane and Stupakov*, in RF-free residual chirp mitigation using only passive techniques. Beam-induced longitudinal wakefields are produced with opposing corrugated plates which allow for an entirely RF-free chirp removal. Theory, engineering, and experimental results are presented.
* K.L.F. Bane, G. Stupakov, Nucl. Inst. Meth. 690 (2012) 106-110

TUPSM27

High-power Tests and Initial Electron Beam Measurements of the New High-gradient Normal Conducting RF Photoinjector System for the Sincrotrone Trieste

694

L. Faillace, R.B. Agustsson, H. Badakov, P. Frigola, A. Verma
RadiaBeam, Santa Monica, USA
F. Cianciosi, P. Craievich, M. Trovò
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
A. Fukasawa, J.B. Rosenzweig, A. Yakub
UCLA, Los Angeles, USA

Radiabeam Technologies, in collaboration with UCLA, presents the development of a high gradient normal conducting radio frequency (NCRF) 1.6 cell photoinjector system, termed the Fermi Gun II, for the Sincrotrone Trieste (ST) facility. Designed to operate with a 120MV/m accelerating gradient, this single feed, fat lipped racetrack coupler design is modeled after the LCLS photoinjector with a novel demountable cathode which permits cost effective cathode exchange. Full overview of the project to date, installation, high-power RF conditioning and initial electron beam emittance measurements at Sincrotrone Trieste will be discussed along with basic design, engineering and manufacturing.