Experimental test of a new technique to overcome spin-depolarizing resonances.
We recently tested a new spin resonance crossing technique, Kondratenko Crossing (KC), by sweeping an rf-solenoid's frequency through an rf-induced spin resonance with both the KC and traditional fast crossing (FC) patterns. Using both rf bunched and unbunched 1.85 GeV/c polarized deuterons stored in COSY, we varied the parameters of both crossing patterns. Compared to FC with the same crossing speed, KC reduced the depolarization by measured factors of 4.7 +/- 0.3 and 19_{-5};{+12} for unbunched and bunched beams, respectively. This clearly showed the large potential benefit of Kondratenko Crossing over fast crossing.
Morozov
V S
VS
Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1040, USA.
Chao
A W
AW
Krisch
A D
AD
Leonova
M A
MA
Raymond
R S
RS
Sivers
D W
DW
Wong
V K
VK
Garishvili
A
A
Gebel
R
R
Lehrach
A
A
Lorentz
B
B
Maier
R
R
Prasuhn
D
D
Stockhorst
H
H
Welsch
D
D
Hinterberger
F
F
Kondratenko
A M
AM