Cyclotrons2013 - List of Keywords (power-supply)

Paper	Title	Other Keywords	Page
TUPSH012	The Development of High Stability Magnet Power Supply	controls, EPICS, feedback, high-voltage	245
	K.-H. Park, H.S. Han, Y.-G. Jung, D.E. Kim, S.-C. Kim, H.-G. Lee, H.S. Suh PAL, Pohang, Kyungbuk, Republic of Korea J.-S. Chai, Y.S. Lee SKKU, Suwon, Republic of Korea
	This paper presents the magnet power supply (MPS) for the beam correction magnet. The required current to energize the magnet was ±20 A. The MPS has been implemented using the digital signal processing technology and shows the high stability and other good responses. The stability of the MPS was about ~10 ppm in short and long term, respectively. Various experimental results such as stability, bandwidth and simulation are given in this paper

TUPSH016	Trim Coil Unbalance of the 88-Inch Cyclotron	cyclotron, ion, injection, radiation	254
	M. Kireeff Covo, B. Bingham, C.M. Lyneis, B. Ninemire, L. Phair, P. Pipersky, A. Ratti, M.M. Strohmeier, D.S. Todd LBNL, Berkeley, California, USA K.Y. Franzen Mevion, Littleton, Massachusetts, USA
	Funding: Work supported by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Nuclear Physics Division of the U.S. Department of Energy under Contract DE-AC02-05CH11231. The 88-inch cyclotron Dee probe shows large losses inside the radius of 20 cm and suggests problems in the ion beam injection. The current of the top and bottom innermost trim coil 1 is unbalanced to study effects of the axial injection displacement. A new beam profile monitor images the ion beam bunches, turn by turn, and the beam center of mass position is measured. The technique allows increasing the beam transmission through the cyclotron.

FR2PB01	Construction of the Rare RI Ring at the RIKEN RI Beam Factory	kicker, injection, accumulation, cyclotron	477
	M. Wakasugi RIKEN Nishina Center, Wako, Japan
	Construction of the Rare-RI Ring has been started in 2012 at RIKEN RI Beam Factory. This ring is an isochronous storage ring aiming at 1-ppm precision mass measurements for short-lived rare nuclei extremely far from stability line. The beam optics in the ring is defined by simply 24 bending magnets, and half of them are accompanied by ten trim coils to precisely optimize the isochronism of circulating beams. The momentum acceptance, in which the isochronous condition is satisfied within 1-ppm accuracy, is designed to be 1%. Of particular note is the development of the exceptionally-fast response kicker system, which is triggered by the produced RI beam itself to make effective use of extremely rare events. In this paper, we present details of the Rare-RI Ring, the status of the construction, and prospects of the project.
	Slides FR2PB01 [6.694 MB]

Paper

Title

Other Keywords

Page

TUPSH012

The Development of High Stability Magnet Power Supply

controls, EPICS, feedback, high-voltage

245

K.-H. Park, H.S. Han, Y.-G. Jung, D.E. Kim, S.-C. Kim, H.-G. Lee, H.S. Suh
PAL, Pohang, Kyungbuk, Republic of Korea
J.-S. Chai, Y.S. Lee
SKKU, Suwon, Republic of Korea

This paper presents the magnet power supply (MPS) for the beam correction magnet. The required current to energize the magnet was ±20 A. The MPS has been implemented using the digital signal processing technology and shows the high stability and other good responses. The stability of the MPS was about ~10 ppm in short and long term, respectively. Various experimental results such as stability, bandwidth and simulation are given in this paper

TUPSH016

Trim Coil Unbalance of the 88-Inch Cyclotron

cyclotron, ion, injection, radiation

254

M. Kireeff Covo, B. Bingham, C.M. Lyneis, B. Ninemire, L. Phair, P. Pipersky, A. Ratti, M.M. Strohmeier, D.S. Todd
LBNL, Berkeley, California, USA
K.Y. Franzen
Mevion, Littleton, Massachusetts, USA

Funding: Work supported by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Nuclear Physics Division of the U.S. Department of Energy under Contract DE-AC02-05CH11231.
The 88-inch cyclotron Dee probe shows large losses inside the radius of 20 cm and suggests problems in the ion beam injection. The current of the top and bottom innermost trim coil 1 is unbalanced to study effects of the axial injection displacement. A new beam profile monitor images the ion beam bunches, turn by turn, and the beam center of mass position is measured. The technique allows increasing the beam transmission through the cyclotron.

FR2PB01

Construction of the Rare RI Ring at the RIKEN RI Beam Factory

kicker, injection, accumulation, cyclotron

477

M. Wakasugi
RIKEN Nishina Center, Wako, Japan

Construction of the Rare-RI Ring has been started in 2012 at RIKEN RI Beam Factory. This ring is an isochronous storage ring aiming at 1-ppm precision mass measurements for short-lived rare nuclei extremely far from stability line. The beam optics in the ring is defined by simply 24 bending magnets, and half of them are accompanied by ten trim coils to precisely optimize the isochronism of circulating beams. The momentum acceptance, in which the isochronous condition is satisfied within 1-ppm accuracy, is designed to be 1%. Of particular note is the development of the exceptionally-fast response kicker system, which is triggered by the produced RI beam itself to make effective use of extremely rare events. In this paper, we present details of the Rare-RI Ring, the status of the construction, and prospects of the project.

Slides FR2PB01 [6.694 MB]