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Magnetic Bunch Compression for a Compact Compton Source
A compact electron accelerator suitable for Compton source applications is in design at the Center for Accelerator Science at Old Dominion University and Jefferson Lab. Here we discuss two options for transverse magnetic bunch compression and final focus, each involving a 4-dipole chicane with M56 tunable over a range of 1.5-2.0m with independent tuning of final focus to interaction point \beta*=5mm. One design has no net bending, while the other has net bending of 90 degrees and is suitable for compact corner placement
Bunch Splitting Simulations for the JLEIC Ion Collider Ring
We describe the bunch splitting strategies for the proposed JLEIC ion collider ring at Jefferson Lab. This complex requires an unprecedented 9:6832 bunch splitting, performed in several stages. We outline the problem and current results, optimized with ESME including general parameterization of 1:2 bunch splitting for JLEIC parameters
RHIC RF Harmonic Numbers for Low Energy Operations
There have been several test runs of RHIC operations to explore the feasibility of luminosity production at low energies. There is considerable international interest in the possible existence of a QCD phase diagram critical point in the RHIC gold-gold collision energy range of {radical}s{sub NN} = 5-50 GeV[l, 2, 3]. This paper reviews the RF harmonic number constraints for RHIC gold-gold collisions in this energy range, and concludes that optimal simultaneous collisions at both experiments are only feasible when the harmonic number is divisible by 9
Coupling and Alignment of the PHENIX Experiment Solenoid in RHIC
This report addresses the coupling and alignment of the PHENIX experiment solenoid in RHIC
RHIC heavy ion operations performance
The Relativistic Heavy Ion Collider (RHIC) completed its fifth year of operation in 2005, colliding copper ion beams with ps=200 GeV/u and 62.4 GeV/u[1]. Previous heavy ion runs have collided gold ions at ps=130 GeV/u, 200 GeV/u, and 62.4 GeV/u[2], and deuterons and gold ions at ps=200 GeV/u[3]. This paper discusses operational performance statistics of this facility, including Cu- Cu delivered luminosity, availability, calendar time spent in physics stores, and time between physics stores. We summarize the major factors affecting operations efficiency, and characterize machine activities between physics stores
Description of the RHIC Sequencer System
The movement of the Relativistic Heavy Ion Collider (RHIC) through its
various states (eg. injection, acceleration, storage, collisions) is controlled
by an application called the Sequencer. This program orchestrates most magnet
and instrumentation systems and is responsible for the coordinated acquisition
and saving of data from various systems. The Sequencer system, its software
infrastructure, support programs, and the language used to drive it are
discussed in this paper. Initial operational experience is also described.Comment: Poster paper for ICALEPCS 2001 conference, San Jose, USA, (THAP062),
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