Spin flipping a stored polarized proton beam with an rf dipole
We recently studied the spin flipping of a 202.7 MeV vertically polarized proton beam stored in the Indiana University Cyclotron Facility cooler ring during the first polarized run with its new cooler injector synchrotron and its new cooler injector polarized ion source. We first set the vertical be...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2000-04-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.3.041001 |
| _version_ | 1828862185676210176 |
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| author | V. A. Anferov B. B. Blinov D. Yu. Kantsyrev A. D. Krisch D. W. Sivers C. M. Chu P. Schwandt B. von Przewoski V. N. Grishin |
| author_facet | V. A. Anferov B. B. Blinov D. Yu. Kantsyrev A. D. Krisch D. W. Sivers C. M. Chu P. Schwandt B. von Przewoski V. N. Grishin |
| author_sort | V. A. Anferov |
| collection | DOAJ |
| description | We recently studied the spin flipping of a 202.7 MeV vertically polarized proton beam stored in the Indiana University Cyclotron Facility cooler ring during the first polarized run with its new cooler injector synchrotron and its new cooler injector polarized ion source. We first set the vertical betatron tune to avoid the measured ν_{y} value of the Gγ=7-ν_{y} intrinsic depolarizing resonance in the cooler ring. We then flipped the spin by ramping the frequency of an rf dipole through an rf-induced depolarizing resonance. After optimizing the rf dipole's frequency ramp parameters, we used multiple spin flips to measure a maximum spin-flip efficiency of 97.5±1%. |
| first_indexed | 2024-12-13T03:18:39Z |
| format | Article |
| id | doaj.art-e7aacc9fefe54a40b66e1ba55a8d719a |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-13T03:18:39Z |
| publishDate | 2000-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-e7aacc9fefe54a40b66e1ba55a8d719a2022-12-22T00:01:25ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022000-04-013404100110.1103/PhysRevSTAB.3.041001Spin flipping a stored polarized proton beam with an rf dipoleV. A. AnferovB. B. BlinovD. Yu. KantsyrevA. D. KrischD. W. SiversC. M. ChuP. SchwandtB. von PrzewoskiV. N. GrishinWe recently studied the spin flipping of a 202.7 MeV vertically polarized proton beam stored in the Indiana University Cyclotron Facility cooler ring during the first polarized run with its new cooler injector synchrotron and its new cooler injector polarized ion source. We first set the vertical betatron tune to avoid the measured ν_{y} value of the Gγ=7-ν_{y} intrinsic depolarizing resonance in the cooler ring. We then flipped the spin by ramping the frequency of an rf dipole through an rf-induced depolarizing resonance. After optimizing the rf dipole's frequency ramp parameters, we used multiple spin flips to measure a maximum spin-flip efficiency of 97.5±1%.http://doi.org/10.1103/PhysRevSTAB.3.041001 |
| spellingShingle | V. A. Anferov B. B. Blinov D. Yu. Kantsyrev A. D. Krisch D. W. Sivers C. M. Chu P. Schwandt B. von Przewoski V. N. Grishin Spin flipping a stored polarized proton beam with an rf dipole Physical Review Special Topics. Accelerators and Beams |
| title | Spin flipping a stored polarized proton beam with an rf dipole |
| title_full | Spin flipping a stored polarized proton beam with an rf dipole |
| title_fullStr | Spin flipping a stored polarized proton beam with an rf dipole |
| title_full_unstemmed | Spin flipping a stored polarized proton beam with an rf dipole |
| title_short | Spin flipping a stored polarized proton beam with an rf dipole |
| title_sort | spin flipping a stored polarized proton beam with an rf dipole |
| url | http://doi.org/10.1103/PhysRevSTAB.3.041001 |
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