Electron cloud observations and cures in the Relativistic Heavy Ion Collider
- W. FischerM. Blaskiewicz U. Iriso
- 18 April 2008
Physics
Since 2001, the Relativistic Heavy Ion Collider has experienced electron cloud effects, some of which have limited the beam intensity. These include dynamic pressure rises (including pressure…
Polarized proton collisions at 205 GeV at RHIC.
The Brookhaven Relativistic Heavy Ion Collider has been providing collisions of polarized protons at a beam energy of 100 GeV since 2001 and the sensitivity of the polarization survival to orbit distortions is discussed.
eRHIC — Future Electron‐Ion Collider at BNL
- V. PtitsynL. Ahrens Y. Shatunov
- 11 September 2006
Physics, Engineering
We review recent progress in the design of eRHIC, a proposed high luminosity, polarized electron-ion collider which would make use of the existing RHIC machine. The eRHIC collider aims to provide…
Design and implementation of SNS ring vacuum system with suppression of electron cloud instability
The Spallation Neutron Source (SNS) ring is designed to accumulate, via H injection, 1.6x10 protons per pulse at 60 Hz and 1 GeV energy [1]. At such beam intensity, electron cloud is expected to be…
ANALYSIS OF BEAM INDUCED PRESSURE INCREASES IN RHIC WARM VACUUM SECTIONS
With increasing intensity of gold and proton beams during recent RHIC operations, pressure rises of several decades were observed at a few RHIC warm vacuum sections. The pressure increases were…
Low-loss design for the high-intensity accumulator ring of the Spallation Neutron Source
This paper summarizes the low-loss design for the Spallation Neutron Source accumulator ring [``Spallation Neutron Source Design Manual'' (unpublished)]. A hybrid lattice consisting of FODO arcs and…
Estimates for secondary electron emission and desorption yields in grazing collisions of gold ions with beam pipes in the BNL Relativistic Heavy Ion Collider: Proposed mitigation
- P. ThiebergerW. Fischer S. Zhang
- 8 September 2004
Physics
Grazing collisions with the stainless steel beam pipes of gold ions, the so-called ``halo scraping,'' result in large secondary electron emission and surface molecular desorption yields in the…
Quadrupole Steering Effect in the BTA Line
- P. SampsonS. Zhang
- 26 June 1996
Physics, Engineering
RHIC polarized proton performance in run-8.
During Run-8, the Relativistic Heavy Ion Collider (RHIC) provided collisions of spin-polarized proton beams at two interaction regions. Physics data were taken with vertical orientation of the beam…
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