IBIC2013 - List of Keywords (bunching)

Paper	Title	Other Keywords	Page
WEPC19	Performance of Injection Beam Position Monitors in the J-PARC RCS	injection, linac, BPM, monitoring	716
	N. Hayashi, P.K. Saha JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan T. Toyama J-PARC, KEK & JAEA, Ibaraki-ken, Japan
	It is important to monitor the injected beam trajectory and position into a synchrotron ring. In the J-PARC RCS, there are two specialized beam position monitors (BPM) in the first arc section in order to perform continuous monitoring. They detect the linac RF frequency 324 MHz or its second harmonics, these contributions quickly decrease after a few turns in the ring. Therefore, they are sensitive only just injected beam. The RCS adopts the multi-turn injection and transverse painting. These monitors are useful to check the beam behavior on-line.

WEPF27	Coherent Ultraviolet Radiation Measurements of Laser Induced Bunching in a Seeded FEL	radiation, laser, FEL, electron	879
	M. Veronese, A. Abrami, E. Allaria, M. Ferianis, E. Ferrari, M. Trovò Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy F. Cianciosi ESRF, Grenoble, France
	Optimization of the bunching process in a seeded FEL like FERMI@Elettra is an important aspect for machine operation. In this paper we discuss about the power detection of coherent radiation in the UV range as a valuable method for optimizing the bunching induced by the seeding process on the electron beam. Experimental results obtained at FERMI@Elettra are presented here. Measurements of UV coherent transition and diffraction radiation have been used to quantify the bunching produced by the seed laser at lower laser harmonics. The dependence of the laser induced CUVTR signal on various parameters is experimentally studied. Future upgrades and possibilities for bunching measurements at shortest wavelengths are also discussed.

Paper

Title

Other Keywords

Page

WEPC19

Performance of Injection Beam Position Monitors in the J-PARC RCS

injection, linac, BPM, monitoring

716

N. Hayashi, P.K. Saha
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
T. Toyama
J-PARC, KEK & JAEA, Ibaraki-ken, Japan

It is important to monitor the injected beam trajectory and position into a synchrotron ring. In the J-PARC RCS, there are two specialized beam position monitors (BPM) in the first arc section in order to perform continuous monitoring. They detect the linac RF frequency 324 MHz or its second harmonics, these contributions quickly decrease after a few turns in the ring. Therefore, they are sensitive only just injected beam. The RCS adopts the multi-turn injection and transverse painting. These monitors are useful to check the beam behavior on-line.

WEPF27

Coherent Ultraviolet Radiation Measurements of Laser Induced Bunching in a Seeded FEL

radiation, laser, FEL, electron

879

M. Veronese, A. Abrami, E. Allaria, M. Ferianis, E. Ferrari, M. Trovò
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
F. Cianciosi
ESRF, Grenoble, France

Optimization of the bunching process in a seeded FEL like FERMI@Elettra is an important aspect for machine operation. In this paper we discuss about the power detection of coherent radiation in the UV range as a valuable method for optimizing the bunching induced by the seeding process on the electron beam. Experimental results obtained at FERMI@Elettra are presented here. Measurements of UV coherent transition and diffraction radiation have been used to quantify the bunching produced by the seed laser at lower laser harmonics. The dependence of the laser induced CUVTR signal on various parameters is experimentally studied. Future upgrades and possibilities for bunching measurements at shortest wavelengths are also discussed.