IBIC2012 - List of Keywords (quadrupole)

Paper	Title	Other Keywords	Page
MOPA26	Performance and Upgrade of BPMs at the J-PARC MR	proton, alignment, operation, bunching	107
	T. Toyama, Y. Hashimoto J-PARC, KEK & JAEA, Ibaraki-ken, Japan K. Hanamura Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan S. Hatakeyama JAEA/J-PARC, Tokai-mura, Japan M. Okada, M. Tejima KEK, Ibaraki, Japan
	Since recovery from the great earthquake 2011.3.11, proton beam, more than 10¹⁴ ppp, is accelerated up to 30 GeV at the J-PARC MR. The BPMs were originally designed with the external capacitors. The aim was to improve the position response in wider frequencies and to get an adequate output voltage at the design intensity, 4x10¹³ ppb. It was modified, however, not to have the capacitors. Therefore we have sufficient signal intensity from low intensity beams of the initial beam commissioning, but too large from the design intensity beam. The processing circuits (BPMC) have to accommodate those output signals from high intensity beams. We are adding the attenuator-LPFs just before the BPMC. This paper will describe these additional attenuator-LPFs. In connection with the MR collimator upgrade, some BPMs are re-allocated. This process is also reported.

TUPA18	Development of the Beam Position Monitors for the SPIRAL2 Linac	linac, diagnostics, operation, cryomodule	374
	M. Ben Abdillah, P. Ausset, G. Belot, P. Blache, P. Dambre, J. Lesrel, E. Marius IPN, Orsay, France
	Funding: CNRS (Centre National de la Recherche Scientifique) CEA (Commissariat à l'Energie Atomique); Région Basse Normandie Co-Authors: P. Ausset, J. Lesrel, P. Blache, P. Dambre, G. Belot, E. Marius The SPIRAL 2 facility will be able to deliver stable heavy ion beams and deuteron beams at very high intensity, producing and accelerating light and heavy rare ion beams. The driver will accelerate between 0.15mA and 5 mA deuteron beam up to 20 MeV/u and also q/A=1/3 heavy ions up to 14.5 MeV/u. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires from the Beam Position Monitor (BPM) system the measurements of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage and the beam energy. Twenty three BPM were realized for SPIRAL2. This paper addresses all aspects of the design, realization, and calibration of these BPM, while emphasizing the determination of the beam position and shape. The measurements on the BPM are carried out on a test bench in the laboratory: the position mapping with a resolution of 50 μm is performed and the sensitivity to the beam displacement is about 1.36dB/mm at the centre of the BPM. The characterization of the beam shape is performed by means of a special test bench configuration. An overview of the electronics under realization for the BPM of the SPIRAL2 Linac is given. Keywords: BPM, SPIRAL2, position mapping , sensitivity References: P. Ausset « Overview of the beam diagnostics for the driver of SPIRAL 2» R.H.Miller « Nonintercepting Emittance Monitor »

WEIB01	Overview of ESS Beam Diagnostics	linac, target, diagnostics, detector	543
	A. Jansson, C. Böhme, B. Cheymol, H. Hassanzadegan, M. Jarosz, T.J. Shea, L. Tchelidze ESS, Lund, Sweden
	The European Spallation Source (ESS) will use a 2.5GeV superconducting proton linac with a 5MW average beam power to produce the worlds most powerful neutron source. The project, sited in the south of Sweden, is approaching the end of the pre-construction phase, and is expected to enter the construction phase in 2013. This paper gives an overview of the ESS accelerator and the planned beam diagnostics systems, as well as the associated challenges.
	Slides WEIB01 [6.123 MB]

Paper

Title

Other Keywords

Page

MOPA26

Performance and Upgrade of BPMs at the J-PARC MR

proton, alignment, operation, bunching

107

T. Toyama, Y. Hashimoto
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
K. Hanamura
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
S. Hatakeyama
JAEA/J-PARC, Tokai-mura, Japan
M. Okada, M. Tejima
KEK, Ibaraki, Japan

Since recovery from the great earthquake 2011.3.11, proton beam, more than 10¹⁴ ppp, is accelerated up to 30 GeV at the J-PARC MR. The BPMs were originally designed with the external capacitors. The aim was to improve the position response in wider frequencies and to get an adequate output voltage at the design intensity, 4x10¹³ ppb. It was modified, however, not to have the capacitors. Therefore we have sufficient signal intensity from low intensity beams of the initial beam commissioning, but too large from the design intensity beam. The processing circuits (BPMC) have to accommodate those output signals from high intensity beams. We are adding the attenuator-LPFs just before the BPMC. This paper will describe these additional attenuator-LPFs. In connection with the MR collimator upgrade, some BPMs are re-allocated. This process is also reported.

TUPA18

Development of the Beam Position Monitors for the SPIRAL2 Linac

linac, diagnostics, operation, cryomodule

374

M. Ben Abdillah, P. Ausset, G. Belot, P. Blache, P. Dambre, J. Lesrel, E. Marius
IPN, Orsay, France

Funding: CNRS (Centre National de la Recherche Scientifique) CEA (Commissariat à l'Energie Atomique); Région Basse Normandie Co-Authors: P. Ausset, J. Lesrel, P. Blache, P. Dambre, G. Belot, E. Marius
The SPIRAL 2 facility will be able to deliver stable heavy ion beams and deuteron beams at very high intensity, producing and accelerating light and heavy rare ion beams. The driver will accelerate between 0.15mA and 5 mA deuteron beam up to 20 MeV/u and also q/A=1/3 heavy ions up to 14.5 MeV/u. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires from the Beam Position Monitor (BPM) system the measurements of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage and the beam energy. Twenty three BPM were realized for SPIRAL2. This paper addresses all aspects of the design, realization, and calibration of these BPM, while emphasizing the determination of the beam position and shape. The measurements on the BPM are carried out on a test bench in the laboratory: the position mapping with a resolution of 50 μm is performed and the sensitivity to the beam displacement is about 1.36dB/mm at the centre of the BPM. The characterization of the beam shape is performed by means of a special test bench configuration. An overview of the electronics under realization for the BPM of the SPIRAL2 Linac is given.
Keywords: BPM, SPIRAL2, position mapping , sensitivity
References:
*P. Ausset « Overview of the beam diagnostics for the driver of SPIRAL 2»
*R.H.Miller « Nonintercepting Emittance Monitor »

WEIB01

Overview of ESS Beam Diagnostics

linac, target, diagnostics, detector

543

A. Jansson, C. Böhme, B. Cheymol, H. Hassanzadegan, M. Jarosz, T.J. Shea, L. Tchelidze
ESS, Lund, Sweden

The European Spallation Source (ESS) will use a 2.5GeV superconducting proton linac with a 5MW average beam power to produce the worlds most powerful neutron source. The project, sited in the south of Sweden, is approaching the end of the pre-construction phase, and is expected to enter the construction phase in 2013. This paper gives an overview of the ESS accelerator and the planned beam diagnostics systems, as well as the associated challenges.

Slides WEIB01 [6.123 MB]