Beam-based alignment in RHIC

Beebe‐Wang, J.

doi:10.2172/1109519

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…The injection region has been optimized to minimize beam losses 19 . By placing the stripping foil in the falling fringe-field of the combining dipole, halo in the ring due to Lorentz stripping of H°* is minimized.…”

Section: Ring and Transport Systemsmentioning

confidence: 99%

The Spallation Neutron Source project

Alonso

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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The SNS is a "joint-venture" project of five DOE National Laboratories, aimed at building the world's most powerful accelerator-based pulse spallation source. At its planned 2 MW operation, it will produce neutron fluxes at least a factor of ten greater than Rutherford Appleton Laboratory's ISIS, currently the world's leading spallation source. The current design of the SNS, shown in Figure 1, calls for 600 ns pulses of 1 GeV protons striking a liquid mercury target at a 60 Hz rate. Room-temperature and cryogenic moderators produce beams of slow neutrons suitable for materials research. Responsibility for system components is as follows: LBNL will provide the high-brightness H -ion source, transport structures and a 2.5-MeV RFQ accelerator; Los Alamos will build linacs to bring the beam to the full energy of 1 GeV; Brookhaven will build the accumulator ring to compress the 1 ms linac pulse into the sharp pulse delivered to the target; ≈1200 turns will be injected, storing 2x10 14 protons in the ring, which are extracted in a single turn; Oak Ridge will provide the mercury target systems and all conventional facilities; and Argonne and Oak Ridge are coordinating the design of at least 10 neutron-scattering instruments to be provided as the initial suite of experiment stations. The project is formally underway, having been approved and funded by DOE and the US Congress for a construction start in FY99. Neutron beams will be available for users in FY06. FIGURE 1: Schematic layout of SNS BEAM REQUIREMENTSNeutron scattering requires low energy (< milli-electron volt) neutrons, to obtain De Broglie wavelengths commensurate with the size of the structures being studied.

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Section: Ring and Transport Systemsmentioning

confidence: 99%

The Spallation Neutron Source project

Alonso

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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“…by mechanisms 2), 4) and the foil. heating problem [7]. Present plans call for a carbon foil of size of 8 nun x 4 rnm and a thickness of 300 mglcm2.…”

Section: --mentioning

confidence: 99%