ICALEPCS2013 - List of Keywords (emittance)

Paper	Title	Other Keywords	Page
MOPPC111	Overview of LINAC4 Beam Instrumentation Software	linac, software, controls, electronics	374
	L.K. Jensen, M. Andersen, A. Guerrero, B. Kolad, M. Ludwig, U. Raich, F. Roncarolo CERN, Geneva, Switzerland
	This paper presents an overview of results from the recent LINAC4 commissioning with H⁻ beam at CERN. It will cover beam instrumentation systems acquiring beam position, intensity, size and emittance starting from the project proposal to commissioning results.

TUPPC071	Muon Ionization Cooling Experiment: Controls and Monitoring	controls, monitoring, EPICS, hardware	743
	P.M. Hanlet IIT, Chicago, Illinois, USA
	The Muon Ionization Cooling Experiment is a demonstration experiment to prove the feasibility of cooling a beam of muons for use in a Neutrino Factory and/or Muon Collider. The MICE cooling channel will produce a 10% reduction in beam emittance which will be measured with a 1% resolution, and this level of precision requires strict controls and monitoring of all experimental parameters to minimize systematic errors. The MICE Controls and Monitoring system is based on EPICS and integrates with the DAQ, data monitoring systems, a configuration database, and state machines for device operations. Run Control has been developed to ensure proper sequencing of equipment and use of system resources to protect data quality. State machines are used in test operations of cooling channel superconducting solenoids to set parameters for monitoring, alarms, and data archiving. A description of this system, its implementation and performance during both muon beam data collection and magnet training will be discussed.
	Poster TUPPC071 [1.820 MB]

THPPC026	Diagnostic Controls of IFMIF-EVEDA Prototype Accelerator	controls, diagnostics, EPICS, software	1144
	J.F. Denis, D. Bogard, J.-F. Gournay, Y. Lussignol, P. Mattei CEA/DSM/IRFU, France
	The Linear IFMIF prototype accelerator (LIPac) will accelerate a 9 MeV, 125 mA, CW deuteron beam in order to validate the technology that will be used for the future IFMIF accelerator (International Fusion Materials Irradiation Facility). This facility will be installed in Rokkasho (Japan) and Irfu-Saclay has developed the control system for several work packages like the injector and a set of the diagnostic subsystem. At Irfu-Saclay, beam tests were carried out on the injector with its diagnostics. Diagnostic devices have been developed to characterize the high beam power (more than 1MW) along the accelerator: an Emittance Meter Unit (EMU), Ionization Profile Monitors (IPM), Secondary Electron Emission Grids (SEM-grids), Beam Loss Monitors (BLoM and μLoss), and Current Transformers (CT). This control system relies on COTS and an EPICS software platform. A specific isolated fast acquisition subsystem running at high sampling rate (about 1 MS/s), triggered by the Machine Protection System (MPS), is dedicated to the analysis of post-mortem data produced by the BLoMs and current transformer signals.
	Poster THPPC026 [0.581 MB]

THPPC033	Upgrade of BPM DAQ System for SuperKEKB Injector Linac	linac, electron, positron, damping	1153
	M. Satoh, K. Furukawa, F. Miyahara, T. Suwada KEK, Ibaraki, Japan T. Kudou, S. Kusano Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
	The non-destructive beam position monitor (BPM) is indispensable diagnostic tool for the stable beam operation. In the KEK Linac, approximately nineteen BPMs with the strip-line type electrodes are used for the beam orbit measurement and feedback. In addition, some of them are also used for the beam energy feedback loops. The current data acquisition (DAQ) system consists of the fast digital oscilloscopes. A signal from each electrode is analyzed with a predetermined response function up to 50 Hz. In the present DAQ system, the measurement precision of beam position is limited to around 0.5 mm because of ADC resolution. Towards SuperKEKB project, we have a plan to upgrade the BPM DAQ system since the Linac should provide the smaller emittance beam in comparison with previous KEKB Linac. We will report the system description of the new DAQ system and the results of performance test in detail.

FRCOBAB04	Beam Feedback System Challenges at SuperKEKB Injector Linac	controls, linac, feedback, EPICS	1497
	K. Furukawa, R. Ichimiya, M. Iwasaki, H. Kaji, F. Miyahara, T.T. Nakamura, M. Satoh, T. Suwada KEK, Ibaraki, Japan
	SuperKEKB electron/positron asymmetric collider is under construction in order to elucidate new physics beyond the standard model of elementary particle physics. This will be only possible by a precise measurement with 40-times higher luminosity compared with that of KEKB. The injector linac should be upgraded to enable a 20-times smaller beam size of 50 nm at the collision point and twice-larger stored beam current with short lifetime of 10 minutes. At the same time two light source rings, PF and PF-AR, should be filled in top-up injection mode. To this end the linac should be operated with precise beam controls. Dual-layer controls with EPICS and MRF event systems are being enhanced to support precise pulse-to-pulse beam modulation (PPM) at 50Hz. A virtual accelerator (VA) concept is introduced to enable a single linac behaving as four VAs switched by PPM, where each VA corresponds to one of four top-up injections into storage rings. Each VA should be accompanied with independent beam orbit and energy feedback loops to maintain the required beam qualities. The requirements from SuperKEKB HER and LER for beam emittance, energy-spread, and charge are especially challenging.
	Slides FRCOBAB04 [1.596 MB]

Paper

Title

Other Keywords

Page

MOPPC111

Overview of LINAC4 Beam Instrumentation Software

linac, software, controls, electronics

374

L.K. Jensen, M. Andersen, A. Guerrero, B. Kolad, M. Ludwig, U. Raich, F. Roncarolo
CERN, Geneva, Switzerland

This paper presents an overview of results from the recent LINAC4 commissioning with H⁻ beam at CERN. It will cover beam instrumentation systems acquiring beam position, intensity, size and emittance starting from the project proposal to commissioning results.

TUPPC071

Muon Ionization Cooling Experiment: Controls and Monitoring

controls, monitoring, EPICS, hardware

743

P.M. Hanlet
IIT, Chicago, Illinois, USA

The Muon Ionization Cooling Experiment is a demonstration experiment to prove the feasibility of cooling a beam of muons for use in a Neutrino Factory and/or Muon Collider. The MICE cooling channel will produce a 10% reduction in beam emittance which will be measured with a 1% resolution, and this level of precision requires strict controls and monitoring of all experimental parameters to minimize systematic errors. The MICE Controls and Monitoring system is based on EPICS and integrates with the DAQ, data monitoring systems, a configuration database, and state machines for device operations. Run Control has been developed to ensure proper sequencing of equipment and use of system resources to protect data quality. State machines are used in test operations of cooling channel superconducting solenoids to set parameters for monitoring, alarms, and data archiving. A description of this system, its implementation and performance during both muon beam data collection and magnet training will be discussed.

Poster TUPPC071 [1.820 MB]

THPPC026

Diagnostic Controls of IFMIF-EVEDA Prototype Accelerator

controls, diagnostics, EPICS, software

1144

J.F. Denis, D. Bogard, J.-F. Gournay, Y. Lussignol, P. Mattei
CEA/DSM/IRFU, France

The Linear IFMIF prototype accelerator (LIPac) will accelerate a 9 MeV, 125 mA, CW deuteron beam in order to validate the technology that will be used for the future IFMIF accelerator (International Fusion Materials Irradiation Facility). This facility will be installed in Rokkasho (Japan) and Irfu-Saclay has developed the control system for several work packages like the injector and a set of the diagnostic subsystem. At Irfu-Saclay, beam tests were carried out on the injector with its diagnostics. Diagnostic devices have been developed to characterize the high beam power (more than 1MW) along the accelerator: an Emittance Meter Unit (EMU), Ionization Profile Monitors (IPM), Secondary Electron Emission Grids (SEM-grids), Beam Loss Monitors (BLoM and μLoss), and Current Transformers (CT). This control system relies on COTS and an EPICS software platform. A specific isolated fast acquisition subsystem running at high sampling rate (about 1 MS/s), triggered by the Machine Protection System (MPS), is dedicated to the analysis of post-mortem data produced by the BLoMs and current transformer signals.

Poster THPPC026 [0.581 MB]

THPPC033

Upgrade of BPM DAQ System for SuperKEKB Injector Linac

linac, electron, positron, damping

1153

M. Satoh, K. Furukawa, F. Miyahara, T. Suwada
KEK, Ibaraki, Japan
T. Kudou, S. Kusano
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan

The non-destructive beam position monitor (BPM) is indispensable diagnostic tool for the stable beam operation. In the KEK Linac, approximately nineteen BPMs with the strip-line type electrodes are used for the beam orbit measurement and feedback. In addition, some of them are also used for the beam energy feedback loops. The current data acquisition (DAQ) system consists of the fast digital oscilloscopes. A signal from each electrode is analyzed with a predetermined response function up to 50 Hz. In the present DAQ system, the measurement precision of beam position is limited to around 0.5 mm because of ADC resolution. Towards SuperKEKB project, we have a plan to upgrade the BPM DAQ system since the Linac should provide the smaller emittance beam in comparison with previous KEKB Linac. We will report the system description of the new DAQ system and the results of performance test in detail.

FRCOBAB04

Beam Feedback System Challenges at SuperKEKB Injector Linac

controls, linac, feedback, EPICS

1497

K. Furukawa, R. Ichimiya, M. Iwasaki, H. Kaji, F. Miyahara, T.T. Nakamura, M. Satoh, T. Suwada
KEK, Ibaraki, Japan

SuperKEKB electron/positron asymmetric collider is under construction in order to elucidate new physics beyond the standard model of elementary particle physics. This will be only possible by a precise measurement with 40-times higher luminosity compared with that of KEKB. The injector linac should be upgraded to enable a 20-times smaller beam size of 50 nm at the collision point and twice-larger stored beam current with short lifetime of 10 minutes. At the same time two light source rings, PF and PF-AR, should be filled in top-up injection mode. To this end the linac should be operated with precise beam controls. Dual-layer controls with EPICS and MRF event systems are being enhanced to support precise pulse-to-pulse beam modulation (PPM) at 50Hz. A virtual accelerator (VA) concept is introduced to enable a single linac behaving as four VAs switched by PPM, where each VA corresponds to one of four top-up injections into storage rings. Each VA should be accompanied with independent beam orbit and energy feedback loops to maintain the required beam qualities. The requirements from SuperKEKB HER and LER for beam emittance, energy-spread, and charge are especially challenging.

Slides FRCOBAB04 [1.596 MB]