Details

Autor(en) / Beteiligte

• Blinov, B B
• Etienne, Z B
• Krisch, A D
• Leonova, M A
• Lorenzon, W
• Morozov, V S
• Peters, C C
• Wong, V K
• Yonehara, K
• Anferov, V A
• Schwandt, P
• Stephenson, E J
• von Przewoski, B
• Sato, H

Titel

99.6% spin-flip efficiency in the presence of a strong Siberian snake

Ist Teil von

• Physical review letters, 2002-01, Vol.88 (1), p.014801-014801

Ort / Verlag

United States

Erscheinungsjahr

2002

Link zum Volltext

Quelle

APS Digital Backfile Archive (DFG Nationallizenzen)

Beschreibungen/Notizen

• We recently studied the spin-flipping efficiency of an rf-dipole magnet using a 120-MeV horizontally polarized proton beam stored in the Indiana University Cyclotron Facility Cooler Ring, which contained a nearly full Siberian snake. We flipped the spin by ramping the rf dipole's frequency through an rf-induced depolarizing resonance. By adiabatically turning on the rf dipole, we minimized the beam loss. After optimizing the frequency ramp parameters, we used 100 multiple spin flips to measure a spin-flip efficiency of 99.63+/-0.05%. This result indicates that spin flipping should be possible in very-high-energy polarized storage rings, where Siberian snakes are certainly needed and only dipole rf-flipper magnets are practical.