PCaPAC2016 - List of Keywords (synchrotron)

Paper	Title	Other Keywords	Page
WECSPLIO01	The Sirius Motion Control Report	ion, controls, Ethernet, scattering	1
	M.P. Donadio, F.P. Figueiredo, J.R. Piton, H.D. de Almeida LNLS, Campinas, Brazil
	Sirius is the new 4th generation synchrotron light source being built in Campinas, Brazil. The motion control report was created to describe all the steps taken to choose the set of motors, motor drives and controllers that the hardware (GAE) and software (SOL) support groups will recommend. The steps include researching motion control systems in other Synchrotron laboratories, talking to the Sirius beam line designers, defining requirements and testing. This presentation describes the report, showing the information gathering process and latest results.
	Slides WECSPLIO01 [14.187 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WECSPLIO01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPOPRPO21	Development of a Virtual Accelerator for Sirius	ion, controls, EPICS, injection	45
	X.R. Resende, A.H.C. Mukai, I. Stevani, L.N.P. Vilela LNLS, Campinas, Brazil
	A virtual accelerator is being developed for Sirius, the new 4th generation synchrotron light source being built in Campinas, Brazil. The virtual accelerator is an on-line beam simulator which is integrated into EPICS control system. It consists of a command line interface server with a channel access (CA) layer and with an in-house developed tracking code library written in C++ for efficiency gain. The purpose of such server is to facilitate early development and testing of high level applications for the control system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WEPOPRPO21
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOPRPO11	Processing SPE Files from Princeton Instruments during Data Acquisition in LNLS	ion, experiment, controls, detector	108
	D.B. Beniz LNLS, Campinas, Brazil
	The beamline of Dispersive X-ray Absorption Spectroscopy, DXAS, in LNLS uses a Princeton Instruments CCD, PyLoN, to acquire spectra of materials under analysis. Such camera produces an SPE binary file. Some Python scripts were developed to display absorbance and x-ray magnetic circular dichroism (XMCD) during the experiment. Firstly, using WinspecUtils.py* module we extract the data in a 2D array (intensities by pixels) from an SPE file of radiant flux received by a material (I0), then, while spectra of radiant flux transmitted by that material (I), is being acquired, their data are extracted from a temporary SPE file. With I and I0 we calculate absorbance (mu) = ln(I0/I) and plot it with matplotlib** of Python . For XMCD same data extraction is performed, but each cycle has eight spectra with magnet field varying its orientation: + - - + - + + -; and the calculation is XMCD = {AVG[mu(norm)(+)] - AVG[mu(norm)(-)]}. Calculated XMCD is also plot. So, with such information of absorbance and XMCD being displayed during the experiment the users could quickly act to fix any problem. * WinspecUtils.py module: version shared by Kasey Russell (krussell@post.harvard.edu), based on other version of James Battat (jbattat@post.harvard.edu) ** matplotlib: http://matplotlib.org
	Poster THPOPRPO11 [0.489 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-THPOPRPO11
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRFMPLIO03	Overview of Some Feedback & Control Systems at Synchrotron Soleil	ion, controls, feedback, cavity	132
	C. Engblom, Y.-M. Abiven, F. Blache, D.C. Corruble, A. Dawiec, M. Diop, N. Hubert, N. Jobert, S.K. Kubsky, F. Langlois, P. Marchand, G. Renaud SOLEIL, Gif-sur-Yvette, France T. Stankevic MAX IV Laboratory, Lund University, Lund, Sweden
	This paper gives an overview of some feedback & control systems in Synchrotron SOLEIL that are in use or in development today. Electron Beam stability is something that is being addressed in several SOLEIL applications; Fast Orbit Feedback is a multi-input multi-output control system made to stabilize beam position perturbations with slow and fast corrections. In addition, active RF cavities are used to maintain stable beam energy & spread as well as keeping electron density even throughout the storage ring. Beam stability also comes from feedforward non-linear control in particle trajectory compensation on both sides of electromagnetic undulators. On beamlines, multi-actuator piezos or pneumatics are used to regulate photon flux to keep within detector operating range; a method to maximize the photon flux while keeping detector below damage thresholds. Currently in development at the sample stage level, the Nanoprobe Project (collaboration MAXIV & Soleil) focuses on sample stabilization during step- & fly- scans which is realized through multi-axis nano-positioning with high- & low- frequency closed-loop control implementing interferometer feedback &/or compensation tables.
	Slides FRFMPLIO03 [6.248 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-FRFMPLIO03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

WECSPLIO01

The Sirius Motion Control Report

ion, controls, Ethernet, scattering

1

M.P. Donadio, F.P. Figueiredo, J.R. Piton, H.D. de Almeida
LNLS, Campinas, Brazil

Sirius is the new 4th generation synchrotron light source being built in Campinas, Brazil. The motion control report was created to describe all the steps taken to choose the set of motors, motor drives and controllers that the hardware (GAE) and software (SOL) support groups will recommend. The steps include researching motion control systems in other Synchrotron laboratories, talking to the Sirius beam line designers, defining requirements and testing. This presentation describes the report, showing the information gathering process and latest results.

Slides WECSPLIO01 [14.187 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WECSPLIO01

Export •

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

WEPOPRPO21

Development of a Virtual Accelerator for Sirius

ion, controls, EPICS, injection

45

X.R. Resende, A.H.C. Mukai, I. Stevani, L.N.P. Vilela
LNLS, Campinas, Brazil

A virtual accelerator is being developed for Sirius, the new 4th generation synchrotron light source being built in Campinas, Brazil. The virtual accelerator is an on-line beam simulator which is integrated into EPICS control system. It consists of a command line interface server with a channel access (CA) layer and with an in-house developed tracking code library written in C++ for efficiency gain. The purpose of such server is to facilitate early development and testing of high level applications for the control system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-WEPOPRPO21

Export •

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

THPOPRPO11

Processing SPE Files from Princeton Instruments during Data Acquisition in LNLS

ion, experiment, controls, detector

108

D.B. Beniz
LNLS, Campinas, Brazil

The beamline of Dispersive X-ray Absorption Spectroscopy, DXAS, in LNLS uses a Princeton Instruments CCD, PyLoN, to acquire spectra of materials under analysis. Such camera produces an SPE binary file. Some Python scripts were developed to display absorbance and x-ray magnetic circular dichroism (XMCD) during the experiment. Firstly, using WinspecUtils.py* module we extract the data in a 2D array (intensities by pixels) from an SPE file of radiant flux received by a material (I0), then, while spectra of radiant flux transmitted by that material (I), is being acquired, their data are extracted from a temporary SPE file. With I and I0 we calculate absorbance (mu) = ln(I0/I) and plot it with matplotlib** of Python . For XMCD same data extraction is performed, but each cycle has eight spectra with magnet field varying its orientation: + - - + - + + -; and the calculation is XMCD = {AVG[mu(norm)(+)] - AVG[mu(norm)(-)]}. Calculated XMCD is also plot. So, with such information of absorbance and XMCD being displayed during the experiment the users could quickly act to fix any problem.
* WinspecUtils.py module: version shared by Kasey Russell (krussell@post.harvard.edu), based on other version of James Battat (jbattat@post.harvard.edu)
** matplotlib: http://matplotlib.org

Poster THPOPRPO11 [0.489 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-THPOPRPO11

Export •

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

FRFMPLIO03

Overview of Some Feedback & Control Systems at Synchrotron Soleil

ion, controls, feedback, cavity

132

C. Engblom, Y.-M. Abiven, F. Blache, D.C. Corruble, A. Dawiec, M. Diop, N. Hubert, N. Jobert, S.K. Kubsky, F. Langlois, P. Marchand, G. Renaud
SOLEIL, Gif-sur-Yvette, France
T. Stankevic
MAX IV Laboratory, Lund University, Lund, Sweden

This paper gives an overview of some feedback & control systems in Synchrotron SOLEIL that are in use or in development today. Electron Beam stability is something that is being addressed in several SOLEIL applications; Fast Orbit Feedback is a multi-input multi-output control system made to stabilize beam position perturbations with slow and fast corrections. In addition, active RF cavities are used to maintain stable beam energy & spread as well as keeping electron density even throughout the storage ring. Beam stability also comes from feedforward non-linear control in particle trajectory compensation on both sides of electromagnetic undulators. On beamlines, multi-actuator piezos or pneumatics are used to regulate photon flux to keep within detector operating range; a method to maximize the photon flux while keeping detector below damage thresholds. Currently in development at the sample stage level, the Nanoprobe Project (collaboration MAXIV & Soleil) focuses on sample stabilization during step- & fly- scans which is realized through multi-axis nano-positioning with high- & low- frequency closed-loop control implementing interferometer feedback &/or compensation tables.

Slides FRFMPLIO03 [6.248 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-PCaPAC2016-FRFMPLIO03

Export •

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