HB2014 - List of Authors (Danilov, V.V.)

Paper

Title

Page

Chromatic and Space Charge Effects in Nonlinear Integrable Optics

216

S.D. Webb, D.L. Bruhwiler
RadiaSoft LLC, Boulder, Colorado, USA
V.V. Danilov
ORNL, Oak Ridge, Tennessee, USA
R.A. Kishek
UMD, College Park, Maryland, USA
S. Nagaitsev, A. Valishev
Fermilab, Batavia, Illinois, USA

The IOTA test accelerator is under construction at FNAL to study a novel method of advancing the intensity frontier in storage rings: nonlinear integrable optics. For particles at the design momentum, the lattice has two invariants and the dynamics is integrable. In the ideal single-particle two-dimensional case, this yields bounded, regular orbits with extremely large tune spreads. Off-momentum effects such as dispersion and chromaticity, and collective effects such as direct space charge, break the integrability. We discuss the origin of this broken integrability for both single- and many-particle effects, and present simulation results for the IOTA lattice used as a high intensity proton storage ring.

Slides TUO4LR02 [2.373 MB]

WEO3AB02

Status of Preparations for a 10 us H⁻ Laser-Assisted Stripping Experiment

299

S.M. Cousineau, A.V. Aleksandrov, V.V. Danilov, T.V. Gorlov, Y. Liu, A.A. Menshov, M.A. Plum, A. Rakhman, A.P. Shishlo
ORNL, Oak Ridge, Tennessee, USA
F.G. Garcia, N.F. Luttrell
UTK, Knoxville, Tennessee, USA
Y. Takeda
KEK, Ibaraki, Japan

At the Spallation Neutron Source accelerator preparations are underway for a 10 us laser-assisted H⁻ stripping experiment. This is a three orders of magnitude increase in pulse duration compared the to initial 2006 proof of principle experiment. The focus of the experiment is the validation of methods that reduce the average laser power requirement, including laser-ion beam temporal matching, ion beam dispersion tailoring, and specialized longitudinal and transverse optics. In this presentation we report on the status of preparations and the anticipated schedule for the experiment.

Slides WEO3AB02 [7.250 MB]

THO2LR01

H⁻ Beam Optics for the Laser Stripping Project

350

T.V. Gorlov, A.V. Aleksandrov, S.M. Cousineau, V.V. Danilov, M.A. Plum
ORNL, Oak Ridge, Tennessee, USA

Successful realization of the laser stripping experiment depends mainly on correct tailoring of H⁻ bunch and laser beam. H⁻ beam preparation is a challenging task that requires to tune up about 10 parameters simultaneously in situ and taking into account life state of accelerator. This makes a huge technological difference compared to the foil stripping method. In this paper we present experience and methods of tuning the H⁻ bunch.

Paper	Title	Page
TUO4LR02	Chromatic and Space Charge Effects in Nonlinear Integrable Optics	216
	S.D. Webb, D.L. Bruhwiler RadiaSoft LLC, Boulder, Colorado, USA V.V. Danilov ORNL, Oak Ridge, Tennessee, USA R.A. Kishek UMD, College Park, Maryland, USA S. Nagaitsev, A. Valishev Fermilab, Batavia, Illinois, USA
	The IOTA test accelerator is under construction at FNAL to study a novel method of advancing the intensity frontier in storage rings: nonlinear integrable optics. For particles at the design momentum, the lattice has two invariants and the dynamics is integrable. In the ideal single-particle two-dimensional case, this yields bounded, regular orbits with extremely large tune spreads. Off-momentum effects such as dispersion and chromaticity, and collective effects such as direct space charge, break the integrability. We discuss the origin of this broken integrability for both single- and many-particle effects, and present simulation results for the IOTA lattice used as a high intensity proton storage ring.
	Slides TUO4LR02 [2.373 MB]

WEO3AB02	Status of Preparations for a 10 us H⁻ Laser-Assisted Stripping Experiment	299
	S.M. Cousineau, A.V. Aleksandrov, V.V. Danilov, T.V. Gorlov, Y. Liu, A.A. Menshov, M.A. Plum, A. Rakhman, A.P. Shishlo ORNL, Oak Ridge, Tennessee, USA F.G. Garcia, N.F. Luttrell UTK, Knoxville, Tennessee, USA Y. Takeda KEK, Ibaraki, Japan
	At the Spallation Neutron Source accelerator preparations are underway for a 10 us laser-assisted H⁻ stripping experiment. This is a three orders of magnitude increase in pulse duration compared the to initial 2006 proof of principle experiment. The focus of the experiment is the validation of methods that reduce the average laser power requirement, including laser-ion beam temporal matching, ion beam dispersion tailoring, and specialized longitudinal and transverse optics. In this presentation we report on the status of preparations and the anticipated schedule for the experiment.
	Slides WEO3AB02 [7.250 MB]

THO2LR01	H⁻ Beam Optics for the Laser Stripping Project	350
	T.V. Gorlov, A.V. Aleksandrov, S.M. Cousineau, V.V. Danilov, M.A. Plum ORNL, Oak Ridge, Tennessee, USA
	Successful realization of the laser stripping experiment depends mainly on correct tailoring of H⁻ bunch and laser beam. H⁻ beam preparation is a challenging task that requires to tune up about 10 parameters simultaneously in situ and taking into account life state of accelerator. This makes a huge technological difference compared to the foil stripping method. In this paper we present experience and methods of tuning the H⁻ bunch.