IBIC2015 - List of Authors (Olmos, A.)

Paper	Title	Page
TUPB046	Integration of the Diamond Transverse Multibunch Feedback System at ALBA	414
	A. Olmos, U. Iriso, J. Moldes, F. Pérez ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain M.G. Abbott, G. Rehm, I.S. Uzun DLS, Oxfordshire, United Kingdom
	A Transverse Multi-Bunch Feedback system (TMBF) has been commissioned at the ALBA storage ring for stabilization of the beam instabilities. The system is based on the Libera Bunch-By-Bunch electronics, controlled using a specific software developed at Diamond Light Source. This system refurbishes the existing FPGA code to include several features for machine studies, like fast and precise tune measurements using a Phase Locked Loop, sequences of grow-damp experiments that allow measuring damping rates on a mode-by-mode basis, and precise bunch cleaning. We describe the TMBF system and the integration of the control software into the ALBA machine. Finally we show examples of beam stabilization and machine studies using this system.
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TUPB048	Measurements and Calibration of the Stripline BPM for the ELI-NP facility with the Stretched Wire Method	423
	A.A. Nosych, C. Colldelram, A. Crisol, U. Iriso, A. Olmos ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain F. Cioeta, A. Falone, A. Ghigo, M. Serio, A. Stella INFN/LNF, Frascati (Roma), Italy A. Mostacci Rome University La Sapienza, Roma, Italy
	A methodology has been developed to perform electrical characterization of the stripline BPMs for the future Gamma Beam System of ELI Nuclear Physics facility in Romania. Several prototype units are extensively benchmarked and the results are presented in this paper. The BPM sensitivity function is determined using a uniquely designed motorized test bench with a stretched wire to measure the BPM response map. Here, the BPM feedthroughs are connected to Libera Brilliance electronics and the wire is fed by continuous wave signal, while the two software-controlled motors provide horizontal and vertical motion of the BPM around the wire. The electrical offset is obtained using S-parameter measurements with a Network Analyzer (via the "Lambertso" method) and is referenced to the mechanical offset.
	Poster TUPB048 [4.978 MB]
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Paper

Title

Page

Integration of the Diamond Transverse Multibunch Feedback System at ALBA

414

A. Olmos, U. Iriso, J. Moldes, F. Pérez
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
M.G. Abbott, G. Rehm, I.S. Uzun
DLS, Oxfordshire, United Kingdom

A Transverse Multi-Bunch Feedback system (TMBF) has been commissioned at the ALBA storage ring for stabilization of the beam instabilities. The system is based on the Libera Bunch-By-Bunch electronics, controlled using a specific software developed at Diamond Light Source. This system refurbishes the existing FPGA code to include several features for machine studies, like fast and precise tune measurements using a Phase Locked Loop, sequences of grow-damp experiments that allow measuring damping rates on a mode-by-mode basis, and precise bunch cleaning. We describe the TMBF system and the integration of the control software into the ALBA machine. Finally we show examples of beam stabilization and machine studies using this system.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

TUPB048

Measurements and Calibration of the Stripline BPM for the ELI-NP facility with the Stretched Wire Method

423

A.A. Nosych, C. Colldelram, A. Crisol, U. Iriso, A. Olmos
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
F. Cioeta, A. Falone, A. Ghigo, M. Serio, A. Stella
INFN/LNF, Frascati (Roma), Italy
A. Mostacci
Rome University La Sapienza, Roma, Italy

A methodology has been developed to perform electrical characterization of the stripline BPMs for the future Gamma Beam System of ELI Nuclear Physics facility in Romania. Several prototype units are extensively benchmarked and the results are presented in this paper. The BPM sensitivity function is determined using a uniquely designed motorized test bench with a stretched wire to measure the BPM response map. Here, the BPM feedthroughs are connected to Libera Brilliance electronics and the wire is fed by continuous wave signal, while the two software-controlled motors provide horizontal and vertical motion of the BPM around the wire. The electrical offset is obtained using S-parameter measurements with a Network Analyzer (via the "Lambertso" method) and is referenced to the mechanical offset.

Poster TUPB048 [4.978 MB]

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)