Confinement of a large number of antiprotons and production of an ultraslow antiproton beam.
We have used a radio frequency quadrupole decelerator to decelerate antiprotons emerging from the CERN Antiproton Decelerator from MeV- to keV-scale energy, and collected five decelerated pulses in a multiring trap. Some 5 x 10(6) antiprotons were stacked in this way. Cooling of the trapped antiprotons by a simultaneously trapped electron plasma was studied nondestructively via shifts in plasma mode frequencies. We have also demonstrated the first step in extracting a 10-500 eV antiproton beam from the trap.
Kuroda
N
N
Institute of Physics, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan.
Torii
H A
HA
Franzen
K Yoshiki
KY
Wang
Z
Z
Yoneda
S
S
Inoue
M
M
Hori
M
M
Juhász
B
B
Horváth
D
D
Higaki
H
H
Mohri
A
A
Eades
J
J
Komaki
K
K
Yamazaki
Y
Y