ICALEPCS2013 - List of Keywords (quadrupole)

Paper	Title	Other Keywords	Page
THPPC037	EPICS-based Control System for New Skew Quadrupole Magnets in J-PARC MR	controls, PLC, EPICS, status	1168
	K.C. Sato JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan S. Igarashi KEK, Ibaraki, Japan N. Kamikubota, J. Takano, S. Yamada, N. Yamamoto J-PARC, KEK & JAEA, Ibaraki-ken, Japan S.Y. Yoshida Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
	In J-PARC Main Ring (MR), a control system for new skew quadrupole magnets has been constructed. This system is based on EPICS　(Experimental Physics and Industrial Control System). The system comprises a YOKOGAWA F3RP61-2L (a PLC controller running Linux), a function generator (Tektronix AFG3000), and a commercial bipolar-DC Amplifier. The function generator is controlled using VXI-11 protocol over Ethernet, and the amplifier is connected to PLC I/O modules with hardwire. Both devices are controlled by the F3RP61-2L. The Function Generator produces a ramp waveform at each machine cycle of 2.48 seconds. The DC amplifire drives the magnet. The control system for skew quadrupole magnets was developed in 2012, and has been in opeation since January, 2013.
	Poster THPPC037 [1.027 MB]

THPPC120	A Simplified Model of the International Linear Collider Final Focus System	detector, controls, feedback, resonance	1341
	M. Oriunno, T.W. Markiewicz SLAC, Menlo Park, California, USA C.G.R.L. Collette, D. Tshilumba ULB - FSA - SMN, Bruxelles, Belgium
	Mechanical vibrations are the main sources of Luminosity Loss at the Final Focus System of the future Linear Colliders, where the nanometric beams are required to be extremely stable. Precise models are needed to validate the supporting scheme adopted. Where the beam structure allows it, as for the International Linear Collider (ILC), intra-trains Luminosity Feedback schemes are possible. Where this is not possible, as for the Compact Linear Collider (CLIC), an active stabilization of the doublets is required. Further complications arise from the optics requirements, which place the final doublet very close to the IP (~4m). We present a model of the SID detector, where the QD0 doublet is captured inside the detector and the QF1 magnet is inside the tunnel. Ground Motion measured at the SLD detector at SLAC have been used together with a model of the technical noise. The model predicts that the rms vibration of QDO is below the capture range of the IP feedback system available in the ILC. With the addition of an active stabilization system on QD0, it is also possible to achieve the stability requirements of CLIC. These results can have important implications for CLIC.

Paper

Title

Other Keywords

Page

THPPC037

EPICS-based Control System for New Skew Quadrupole Magnets in J-PARC MR

controls, PLC, EPICS, status

1168

K.C. Sato
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
S. Igarashi
KEK, Ibaraki, Japan
N. Kamikubota, J. Takano, S. Yamada, N. Yamamoto
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
S.Y. Yoshida
Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan

In J-PARC Main Ring (MR), a control system for new skew quadrupole magnets has been constructed. This system is based on EPICS　(Experimental Physics and Industrial Control System). The system comprises a YOKOGAWA F3RP61-2L (a PLC controller running Linux), a function generator (Tektronix AFG3000), and a commercial bipolar-DC Amplifier. The function generator is controlled using VXI-11 protocol over Ethernet, and the amplifier is connected to PLC I/O modules with hardwire. Both devices are controlled by the F3RP61-2L. The Function Generator produces a ramp waveform at each machine cycle of 2.48 seconds. The DC amplifire drives the magnet. The control system for skew quadrupole magnets was developed in 2012, and has been in opeation since January, 2013.

Poster THPPC037 [1.027 MB]

THPPC120

A Simplified Model of the International Linear Collider Final Focus System

detector, controls, feedback, resonance

1341

M. Oriunno, T.W. Markiewicz
SLAC, Menlo Park, California, USA
C.G.R.L. Collette, D. Tshilumba
ULB - FSA - SMN, Bruxelles, Belgium

Mechanical vibrations are the main sources of Luminosity Loss at the Final Focus System of the future Linear Colliders, where the nanometric beams are required to be extremely stable. Precise models are needed to validate the supporting scheme adopted. Where the beam structure allows it, as for the International Linear Collider (ILC), intra-trains Luminosity Feedback schemes are possible. Where this is not possible, as for the Compact Linear Collider (CLIC), an active stabilization of the doublets is required. Further complications arise from the optics requirements, which place the final doublet very close to the IP (~4m). We present a model of the SID detector, where the QD0 doublet is captured inside the detector and the QF1 magnet is inside the tunnel. Ground Motion measured at the SLD detector at SLAC have been used together with a model of the technical noise. The model predicts that the rms vibration of QDO is below the capture range of the IP feedback system available in the ILC. With the addition of an active stabilization system on QD0, it is also possible to achieve the stability requirements of CLIC. These results can have important implications for CLIC.