ORBIT-a ring injection code with space charge

Abstract

ORBIT (Objective Ring Beam Injection and Tracking) is a new particle tracking code for rings. Modelling capabilities include H -foil injection mechanisms, longitudinal and transverse space charge effects, and second order matrix transport. Additional code features include a programmable interactive driver shell, and interactive plotting.

Error-Induced Beam Degradation in Fermilab's Accelerators

“…As such, we use macroparticles, each of which represents some fraction of total charge in a machine. 7 including both transverse and longitudinal phase space dimensions 8 including longitudinal phase space only The Object-oriented Ring Beam Injection and Tracking (ORBIT) [2], a three-dimensional C ++ computer package, has been developed by the accelerator physics group of the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The ORBIT-FNAL code is a Fermilab version of ORBIT that has been developed for application to Fermilab accelerators.…”

“…Here we define a collection of charged particles as the system, 1 In this context, we refer noise to electrical current fluctuations. 2 In the context of the simulation of charged-particle beams, a macroparticle represents a fraction of total charge in an accelerator. We consider it to be a representative particle, or simulation particle.…”

ORBIT: A Code for Collective Beam Dynamics in High-Intensity Rings

“…Recognizing this, the SNS Accelerator Physics Group at ORNL, with help from colleagues at BNL, undertook the development of an object-oriented general-purpose code, ORBIT [1,2]. ORBIT began as a C++ rewrite of ACCSZM [3], developed under the SuperCode driver shell [4], but has since undergone extensive independent development, which w i l l be described here.…”

SNS injection simulations with space charge

“…For these beam parameters, space charge effects could drive beam halo growth, which would lead to violation of the stringent loss criterion. In this paper we investigate the transverse halo growth due to space charge using a newly developed simulation tool, ORBIT [1]. We examine a variety of injection schemes, the effect of the lattice tune, and also the impact of using a FODO or doublet lattice.…”

“…We examine a variety of injection schemes, the effect of the lattice tune, and also the impact of using a FODO or doublet lattice. Painting schemes are examined for (1) directly correlated horizontal (X) -vertical (Y) closed orbit bumps, (2) anti-correlated horizontal -vertical bumps, and (3) horizontal closed orbit bump (fixed vertical smoke ring). Next we examine a wide range of lattice tunes for a fixed injection scheme.…”