ICALEPCS2013 - List of Authors (Serra-Gallifa, X.)

Paper

Title

Page

Em# Project. Improvement of Low Current Measurements at Alba Synchrotron

798

X. Serra-Gallifa, J.A. Avila-Abellan, J.J. Jamroz, O. Matilla
CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain

After two years with 50 four-channels electrometer measurement units working successfully at Alba beamlines, new features implementation have forced a complete instrument architecture change. This new equipment is taking advantage of the targets achieved as the remarkable low noise in the current amplifier stage and implements new features currently not available in the market. First an embedded 18 bits SAR ADC able to work under up to 500V biasing has been implemented looking for the highest possible accuracy. The data stream is analysed by a flexible data processing based on a FPGA which is able to execute sample-by-sample real-time calculation aimed to be applied in experiments as the current normalization absorption between two channel acquisitions; being able to optimize the SNR of an absorption spectrum. The equipment is oriented from the design stage to be integrated in continuous scans setups, implementing low level timestamp compatible with multiple clock sources standards using an SFP port. This port could also be used in the future to integrate XBPM measures into the FOFB network for the accelerator beam position correction.

Poster TUPPC094 [0.545 MB]

WECOAAB03

Synchronization of Motion and Detectors and Continuous Scans as the Standard Data Acquisition Technique

992

D.F.C. Fernández-Carreiras, F. Becheri, G. Cuní, R. Homs-Puron, G. Jover-Mañas, J. Klora, O. Matilla, J. Moldes, C. Pascual-Izarra, Z. Reszela, D. Roldan, S. Rubio-Manrique, X. Serra-Gallifa
CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
T.M. Coutinho
ESRF, Grenoble, France

This paper describes the model, objectives and implementation of a generic data acquisition structure for an experimental station, which integrates the hardware and software synchronization of motors, detectors, shutters and in general any experimental channel or events related with the experiment. The implementation involves the management of hardware triggers, which can be derived from time, position of encoders or even events from the particle accelerator, combined with timestamps for guaranteeing the correct integration of software triggered or slow channels. The infrastructure requires a complex management of buffers of different sources, centralized and distributed, including interpolation procedures. ALBA uses Sardana built on TANGO as the generic control system, which provides the abstraction and communication with the hardware, and a complete macro edition and execution environment.

Slides WECOAAB03 [2.432 MB]

THPPC115

Fast Orbit Feedback Implementation at Alba Synchrotron

1328

X. Serra-Gallifa, S. Blanch-Torné, D.F.C. Fernández-Carreiras, A. Gutierrez-Milla, Z. Martí, O. Matilla, J. Moldes, A. Olmos, R. Petrocelli
CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain

After the successful accelerator commissioning and with the facility already in operation one of the top short term objectives pointed out by accelerator division was the Fast Orbit Feedback implementation (FOFB). The target of the FOFB system is to hold the electron beam position at submicron range both in vertical and horizontal planes correcting the inestabilities up to 120Hz. This increased beam stability performance is considered a major asset for the beamlines user operation. To achieve this target, the orbit position is acquired from the 88 Libera BPMs at a 10KHz sampling rate, distributed through an independent network and the corrections are calculated and sent to the 176 power supplies that drive the corrector coils. All this correction loop is executed at 10 KHz and the total latency of the system is characterized and minimized optimizing the bandwidth response.

Poster THPPC115 [0.732 MB]

Paper	Title	Page
TUPPC094	Em# Project. Improvement of Low Current Measurements at Alba Synchrotron	798
	X. Serra-Gallifa, J.A. Avila-Abellan, J.J. Jamroz, O. Matilla CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
	After two years with 50 four-channels electrometer measurement units working successfully at Alba beamlines, new features implementation have forced a complete instrument architecture change. This new equipment is taking advantage of the targets achieved as the remarkable low noise in the current amplifier stage and implements new features currently not available in the market. First an embedded 18 bits SAR ADC able to work under up to 500V biasing has been implemented looking for the highest possible accuracy. The data stream is analysed by a flexible data processing based on a FPGA which is able to execute sample-by-sample real-time calculation aimed to be applied in experiments as the current normalization absorption between two channel acquisitions; being able to optimize the SNR of an absorption spectrum. The equipment is oriented from the design stage to be integrated in continuous scans setups, implementing low level timestamp compatible with multiple clock sources standards using an SFP port. This port could also be used in the future to integrate XBPM measures into the FOFB network for the accelerator beam position correction.
	Poster TUPPC094 [0.545 MB]

WECOAAB03	Synchronization of Motion and Detectors and Continuous Scans as the Standard Data Acquisition Technique	992
	D.F.C. Fernández-Carreiras, F. Becheri, G. Cuní, R. Homs-Puron, G. Jover-Mañas, J. Klora, O. Matilla, J. Moldes, C. Pascual-Izarra, Z. Reszela, D. Roldan, S. Rubio-Manrique, X. Serra-Gallifa CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain T.M. Coutinho ESRF, Grenoble, France
	This paper describes the model, objectives and implementation of a generic data acquisition structure for an experimental station, which integrates the hardware and software synchronization of motors, detectors, shutters and in general any experimental channel or events related with the experiment. The implementation involves the management of hardware triggers, which can be derived from time, position of encoders or even events from the particle accelerator, combined with timestamps for guaranteeing the correct integration of software triggered or slow channels. The infrastructure requires a complex management of buffers of different sources, centralized and distributed, including interpolation procedures. ALBA uses Sardana built on TANGO as the generic control system, which provides the abstraction and communication with the hardware, and a complete macro edition and execution environment.
	Slides WECOAAB03 [2.432 MB]

THPPC115	Fast Orbit Feedback Implementation at Alba Synchrotron	1328
	X. Serra-Gallifa, S. Blanch-Torné, D.F.C. Fernández-Carreiras, A. Gutierrez-Milla, Z. Martí, O. Matilla, J. Moldes, A. Olmos, R. Petrocelli CELLS-ALBA Synchrotron, Cerdanyola del Vallès, Spain
	After the successful accelerator commissioning and with the facility already in operation one of the top short term objectives pointed out by accelerator division was the Fast Orbit Feedback implementation (FOFB). The target of the FOFB system is to hold the electron beam position at submicron range both in vertical and horizontal planes correcting the inestabilities up to 120Hz. This increased beam stability performance is considered a major asset for the beamlines user operation. To achieve this target, the orbit position is acquired from the 88 Libera BPMs at a 10KHz sampling rate, distributed through an independent network and the corrections are calculated and sent to the 176 power supplies that drive the corrector coils. All this correction loop is executed at 10 KHz and the total latency of the system is characterized and minimized optimizing the bandwidth response.
	Poster THPPC115 [0.732 MB]