ICALEPCS2013 - List of Authors (Avila-Abellan, J.A.)

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]

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]