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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mackay, W.W. Ahrens, L. Bai, M. Bunce, G. Courant, E. Deshpande, A. Drees, A. Fischer, W. Huang, H. Kurita, K. Luccio, A.U. Makdisi, Y. Pilat, F. Ptitsin, V. Roser, T. Saito, N. Satogata, T. Tepikian, S. Trbojevic, D. Tsoupas, N. van Zeijts, J. Spinka, H. Underwood, D. Kanavets, V. Svirida, D. Lozowski, B. Ranjbar, V. |
| Copyright Year | 2001 |
| Description | Author affiliation: Brookhaven Nat. Lab., Upton, NY, USA (Mackay, W.W.) |
| Abstract | Polarized protons were injected and accelerated in the clockwise ring of RHIC to commission the first full helical Siberian snake ever used in an accelerator. With the snake turned on, the stable spin direction is in the horizontal plane. Vertically polarized protons were injected with the snake off. The snake was adiabatically ramped to give a spin rotation of 180/spl deg/ around a horizontal rotation axis about 13/spl deg/ from the longitudinal. When the beam was accelerated from injection G/spl gamma/ = 46.5 to G/spl gamma/ = 48 the spin flipped sign as expected and polarization was preserved. At G/spl gamma/ = 48 without the snake, no polarization was observed since several spin resonances were crossed. Eventually polarized beam was accelerated to G/spl gamma/ = 55.7 (29.1 GeV). In the next proton running period we plan to run with two full helical snakes in each ring and collide both transversely and longitudinally polarized protons at an energy around 100 GeV per beam. |
| Sponsorship | U.S. Dept. Energy |
| Starting Page | 24 |
| Ending Page | 26 |
| File Size | 309004 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780371917 |
| DOI | 10.1109/PAC.2001.987421 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-06-18 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Resonance Optical polarization Acceleration Proton accelerators Particle beams Electromagnetic wave polarization Clocks Colliding beam devices Hardware Optical pumping |
| Content Type | Text |
| Resource Type | Article |
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