| Paper | Title | Other Keywords | Page |
|---|---|---|---|
| TUPLO12 | Off-Momentum Optics Correction in RHIC | optics, lattice, experiment, injection | 556 |
|
|||
|
Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Future operations of the electron-ion collider eRHIC call for beams circulating off of the magnetic center of all arc elements. In order to ensure that both stable beam conditions and the desired circumference change can be achieved, dedicated experiments were conducted during RHIC Run18, which included the first off-momentum linear optics correction. This article reviews the experimental setup as well as the dedicated algorithm for optics correction, and presents the measured radial excursion and residual off-momentum beta-beat. |
|||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-TUPLO12 | ||
| About • | paper received ※ 27 August 2019 paper accepted ※ 15 September 2019 issue date ※ 08 October 2019 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| WEPLS04 | Simulations of Low Energy Au78+ Losses in RHIC | electron, lattice, MMI, optics | 775 |
|
|||
|
Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The RHIC Run19 BES-II program features the commissioning of the Low Energy RHIC electron Cooling (LEReC) Project, which uses electron cooling techniques to compensate for intra-beam scattering and thus to improve the luminosity lifetime. During RHIC operations at 3.85 GeV (beam energy) with LEReC, one needs to ensure that the electron beam energy is properly matched for cooling purposes: if so, some of the circulating Au-79 ions can recombine with an electron, turning into Au-78 and circulating with a large momentum offset. Part of the LEReC commissioning steps is therefore to drive a maximized number of Au-78 ions towards a chosen location of the RHIC mechanical aperture to generate particle showers that can be detected by a Recombination Monitor outside the cryostat. This article introduces the baseline lattice design, then discusses the few scenarios considered for optimizing Au-78 losses at a given location. Each scenario is then simulated using new tracking tools for generating beam loss maps. |
|||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-WEPLS04 | ||
| About • | paper received ※ 27 August 2019 paper accepted ※ 03 September 2019 issue date ※ 08 October 2019 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| WEPLS11 | Simulation of Transparent Spin Experiment in RHIC | polarization, resonance, experiment, lattice | 789 |
|
|||
|
Funding: Work supported by the U.S. DOE under Contracts No. DE-AC05-06OR23177 and DE-AC02-98CH10886. The transparent spin mode has been proposed as a new technique for preservation and control of the spin polari-zation of ion beams in a synchrotron. The ion rings of the proposed Jefferson Lab Electron-Ion Collider (JLEIC) adopted this technique in their figure-8 design. The transparent spin mode can also be setup in a racetrack with two identical Siberian snakes. There is a proposal to test the predicted features of the spin transparent mode in Relativistic Heavy Ion Collider (RHIC), which already has all of the necessary hardware capabilities. We have earlier analytically estimated the setup parameters and developed a preliminary experimental plan. In this paper we describe simulation setup and benchmarking for the proposed experiment using a Zgoubi model of RHIC. |
|||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2019-WEPLS11 | ||
| About • | paper received ※ 03 September 2019 paper accepted ※ 05 September 2019 issue date ※ 08 October 2019 | ||
| Export • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||