MEDSI2018 - List of Authors (Marcos, J.)

Paper	Title	Page
WEPH06	Upgrade of Magnetic Measurements Laboratory at ALBA Synchrotron	211
	J. Campmany, F. Becheri, J. Marcos, V. Massana, R. Petrocelli, L. Ribó ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	Along 2017 and 2018, a complete upgrade of ALBA magnetic measurements lab has been done. Upgrade has affected both hardware and software. Regarding hardware, a relevant innovation has been the replacement of DC motors by step motors in new Hall probe bench and in flipping and rotating coil benches. Up to now, this kind of continuous measurements usually were done using DC motors because step motors were considered unable to fulfil the required smoothness of the movement. However, current step motors state of the art made them compatible with DC. In our case, we have tested the performance of upgraded benches and they reach the same accuracy, or even better. Regarding software, we have unified all motion drivers to ICEPAP and all control system to Tango package, taking advantage of the last ICEPAP firmware. That includes the feature of triggering data acquisition system by signals generated from different axis that can be selected by software.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH06
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WEPH24	Design of an Integrated Crotch Absorber for ALBA Synchrotron Light Source	258
	M. Quispe, J. Campmany, A.A. Gevorgyan, J. Marcos ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	This paper presents the design of an Integrated Crotch Absorber for the new beamline LOREA (Low-Energy Ultra-High-Resolution Angular Photoemission for Complex Materials at ALBA). The LOREA Insertion Device (ID) consists of an Apple II undulator with a period of 125 mm. For the current ALBA dipole chamber the ID vertical polarized light hits the upper and lower walls because of the very narrow vertical aperture between the cooling channels. To solve this problem some modifications must be implemented both in the dipole chamber and in the crotch absorber located inside of the dipole. The new crotch absorber, named Integrated Crotch Absorber, must absorb a significant part of the ID vertical polarized light in order to avoid radiation impinging at the post dipole chamber. The geometry of the Integrated Crotch Absorber is a combination of the conventional crotch and the distributed absorber done at PSI for ANKA. The design has been optimized taking into account the standard thermo-mechanical design criteria as well as the reflective effects of the ID radiation from the opening towards the walls of the dipole chamber.
	Poster WEPH24 [1.046 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH24
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Upgrade of Magnetic Measurements Laboratory at ALBA Synchrotron

211

J. Campmany, F. Becheri, J. Marcos, V. Massana, R. Petrocelli, L. Ribó
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

Along 2017 and 2018, a complete upgrade of ALBA magnetic measurements lab has been done. Upgrade has affected both hardware and software. Regarding hardware, a relevant innovation has been the replacement of DC motors by step motors in new Hall probe bench and in flipping and rotating coil benches. Up to now, this kind of continuous measurements usually were done using DC motors because step motors were considered unable to fulfil the required smoothness of the movement. However, current step motors state of the art made them compatible with DC. In our case, we have tested the performance of upgraded benches and they reach the same accuracy, or even better. Regarding software, we have unified all motion drivers to ICEPAP and all control system to Tango package, taking advantage of the last ICEPAP firmware. That includes the feature of triggering data acquisition system by signals generated from different axis that can be selected by software.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH06

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPH24

Design of an Integrated Crotch Absorber for ALBA Synchrotron Light Source

258

M. Quispe, J. Campmany, A.A. Gevorgyan, J. Marcos
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

This paper presents the design of an Integrated Crotch Absorber for the new beamline LOREA (Low-Energy Ultra-High-Resolution Angular Photoemission for Complex Materials at ALBA). The LOREA Insertion Device (ID) consists of an Apple II undulator with a period of 125 mm. For the current ALBA dipole chamber the ID vertical polarized light hits the upper and lower walls because of the very narrow vertical aperture between the cooling channels. To solve this problem some modifications must be implemented both in the dipole chamber and in the crotch absorber located inside of the dipole. The new crotch absorber, named Integrated Crotch Absorber, must absorb a significant part of the ID vertical polarized light in order to avoid radiation impinging at the post dipole chamber. The geometry of the Integrated Crotch Absorber is a combination of the conventional crotch and the distributed absorber done at PSI for ANKA. The design has been optimized taking into account the standard thermo-mechanical design criteria as well as the reflective effects of the ID radiation from the opening towards the walls of the dipole chamber.

Poster WEPH24 [1.046 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH24

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)