MEDSI2016 - Classification: Precision Mechanics / Mechatronics, Automation and Real-time System Control

Paper	Title	Page
MOPE12	Development and Characterization of a Large Range Small Angle Generator
	G. Kortaberria, G.A. Aizpurua, A. Delgado, A. Olarra Fundación TEKNIKER, Elbr (Guipuzkoa), Spain
	Funding: Device developed in EMRP SIB58 ANGLES project. This work reports on development and characterization of a new concept of Large Range Small Angle Generator, LRSAG. The device is used for the calibration of high precision angle measuring systems, such as autocollimators, levels and encoders. The state of art requirements for the SAG according to autocollimator manufacturers and users are: ±3600" stroke, 0.001" resolution, high stability and portability. The key element behind the angular motion generation consists on a flexure mechanism. This approach makes possible to reduce the overall size of the LRSAG. Moreover, the mechanism consists on a Parallel Kinematic Mechanism that supports the end effecter, enabling high stiffness and high eigenfrequencies. The mechanisms is actuated by two piezo linear stages that provide large stroke (20 mm) and very high resolution (2 nm in closed loop mode). Two independent measuring systems are also integrated in the angle generator. These systems provide feedback about the position of the moving platform based on imaging systems. One of the measuring systems is a novel "planar differential absolute 3 DOF measurement device". The second system consists on linear encoder technology.
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MOPE13	The 20m/s CERN Fast Vacuum Wire Scanner Conceptual Design and Implementation	29
	J. Herranz Proactive Research and Development, Barcelona, Spain W. Andreazza, N. Chritin, B. Dehning, J. Emery, D. Gudkov, P. Magagnin, S. Samuelsson, J.L. Sirvent, R. Veness CERN, Geneva, Switzerland A. Barjau Universitat Politécnica de Catalunya, Barcelona, Spain
	In the next years the luminosity of the LHC will be significantly increased. Therefore a much higher accuracy of beam profile measurement than actually achievable by the current wire scanner is required. The new performance demands a wire travelling speed up to 20 m/s and a position measurement accuracy of the order of 1 µm. In order to minimize the error source of the wire position measurement, a challenging concept has been developed which consists of the placement of the motor rotor and the angular position sensor in vacuum. The implementation of this new concept requires the use of a magnetic brake, hybrid vacuum bearings, the design and production of very thin (<0.5mm) wall vacuum chamber regions and the production of titanium components by 3D additive technologies. The implementation of this new concept has required different optimization processes as the structural optimization under dynamic load of the most critical rotating elements or the optimization of the control system and the motion pattern. This contribution gives an overview of the new device design and shows the different technical solution applied to develop the new concept in a successful way.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE13
About •	paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
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MOPE14	Optical Laser in-Coupling of the SCS Instrument at the European XFEL
	J.T. Delitz, R. Carley, M. Izquierdo XFEL. EU, Hamburg, Germany C. Broers, A. Scherz European XFEL, Schenefeld, Germany
	To facilitate pump-probe time-resolved studies, an optical laser in-coupling device (LIN) will be located on the Scattering and Coherent Spectroscopy instrument between the Kirkpatrick-Baez (KB) X-ray focusing mirrors and the exchangeable interaction chamber. The main function of the LIN is to bring the optical pump laser to the sample. Optical pump laser pulses can be generated in a range of wavelengths, pulse energies and pulse durations and are synchronized to the FEL pulse sequence. The main feature of the LIN is a set of four in-vacuum mirrors for different wavelengths that can be selected without breaking vacuum. The mirror stack is mounted on a vertical translator with ball-screw- driven linear guides attached to the base granite for stability. Each 2-inch piezo driven mirror holder allows an on-axis or off-axis configuration with respect to the X-ray beam. With a total length of 940 mm the LIN also includes a proper image based diagnostic for the pump laser as well as the FEL beams. To maintain the pressure in the KB mirror chamber two-stages of differential pumping are also included in the setup.
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MOPE15	Cam Mover Alignment System Positioning with Wire Position Sensor Feedback for CLIC	32
	J. Kemppinen, Z.S. Kostka, H. Mainaud Durand CERN, Geneva, Switzerland J. Kemppinen ETH, Zurich, Switzerland
	Compact Linear Collider (CLIC) is a study of an electron-positron collider with nominal energy of 3 TeV and luminosity of 2·10³⁴ cm^-2·s^-1. The luminosity goal leads to stringent alignment requirements for single quadrupole magnets. Vertical and lateral offset deviations with regards to a given orbit reference in both ends of a quadrupole shall be below 1 µm and quadrupole roll deviation shall be below 100 µrad. Translation in the direction of particle beam is not controlled but mechanically locked. A parallel kinematic platform based on cam movers was chosen as system for detailed studies. Earlier studies have shown that cam movers can reach the CLIC requirements through an iterative process. The paper presents new modular off-the-shelf control electronics and software including three optional positioning algorithms based on iterations as well as a more advanced algorithm which can reach target position in one movement. The advanced algorithm reads wire position sensors (WPS), calculates quadrupole orientation based on the readings and updates the remaining trajectory during motion. All of the optional positioning methods reach the CLIC positioning requirements within minutes.
	Poster MOPE15 [0.425 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE15
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE16	Development of the RIXS Manipulator	35
	H. Jöhri, C. Hess, L. Nue, L. Patthey, T. Schmitt PSI, Villigen PSI, Switzerland
	The RIXS Manipulator (RIXS = Resonant Inelastic X-ray Scattering) is a further development of the Carving Manipulator. The carving manipulator has six independent degree of freedom. (Three translations and three rotations). All three rotations are exactly in the middle of the sample surface. The head of the manipulator is in UHV and the sample can be cooled down to 10K. For the RIXS manipulator there is a new requirement to have a field of view from 0-180°. There are mainly two parts in the carving manipulator that set the probe in the shadow of the beam at small angles. - A bellow - The bearings To solve these problems we shifted the bellow behind the pivot point. This give some strange movements of the bellows and we had to analyse this in a separate test installation. For the bearings, we developed a goniometer bearing with ceramic bearing shells. Meanwhile the RIXS manipulator is implemented and in routine operation
	Poster MOPE16 [1.357 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE16
About •	paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017
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MOPE17	OCTOGLIDE - Table Positioning Device for Diffraction Applications	38
	G. Olea, N. Huber HUBER Diffraktiontechnik GmbH&Co.KG, Rimsting, Germany
	A new Table Positioning Device(TPD) for high precision and heavy load manipulations has been developed. Conceived as an alternative to the precision hexapods it fulfils the gap of sample (and/or, instruments) positioning in small (height) available working spaces of synchrotron Diffractometers (Dm). The concept is based on a Redundant Parallel Kinematic Structure (Rd-PKS) with four (4) legs having 2 dof active joints (actuators). In this Proof of Functionality (PoF) step, a stacked solution has been adopted for actuators design using the existent XY translation Positioning Units (Pu). The symmetrically modular 6-4(PP)PS precision mechanism - OCTOGLIDE(OG) having eight (8) gliding actuators (P) is implying also a pair of wedges - Elevation (El) and socket/ball - Guiding (G) Pu, as passive joints (P and S) forming one of the Positioning modules (Pm). Spatial positions can be reached without any singularities and planar motions along/around X or Y axis are performed very intuitively with some of the actuators (decoupled) motion. The first tests of the prototype are revealing both, high accuracy (straightness, flatness, etc) and stiffness capabilities. * Merlet JP, Parallel robots, Springer, 2006
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE17
About •	paper received ※ 09 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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MOPE18	Real-Time Motor Control System for Beamlines	41
	C.F. Chang NSRRC, Hsinchu, Taiwan
	To improve the stability and accuracy of motor control system for beamlines, the beamlines with motor adjustment mechanism collocate with the real-time firmware motor control system through the high-definition motor mechanism. Because the real-time motor control system does not need to be connected with the computer for a long time, it improves the speed, stability and accuracy of closed loop operation and thus promotes the controlling ability of motor. As a result, the real-time motor control system will improve the stability and accuracy of the entire motor control system with beamlines.
	Poster MOPE18 [2.797 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE18
About •	paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017
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MOPE19	Mechatronics Concepts for the New High-Dynamics DCM for Sirius	44
	R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno LNLS, Campinas, Brazil M.J.C. Ronde, T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown.
	Poster MOPE19 [5.423 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE19
About •	paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017
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TUCA05	The New High Dynamics DCM for Sirius	141
	R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno, L. Sanfelici, M. Saveri Silva, N.M. Souza Neto, H.C.N. Tolentino, H. Westfahl Jr. LNLS, Campinas, Brazil T.A.M. Ruijl, R.M. Schneider MI-Partners, Eindhoven, The Netherlands
	Funding: Brazilian Ministry of Science, Technology, Innovation and Communication The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Synchrotron Light Laboratory for the future X-ray undulator and superbend beamlines of Sirius. Aiming at an inter-crystal stability of a few tens of nrad (even during the Bragg angle motion for flyscans) and considering the limitations of current DCM implementations, several aspects of the DCM engineering are being revisited. In order to achieve a highly repeatable dynamic system, with a servocontrol bandwidth in the range of 200 Hz to 300 Hz, solutions are proposed for a few topics, including: actuators and guides, metrology and feedback, LN2 indirect cooling, crystal clamping, thermal management and shielding. The concept of this high-dynamics DCM will be presented.
	Slides TUCA05 [2.254 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA05
About •	paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOPE12

Development and Characterization of a Large Range Small Angle Generator

G. Kortaberria, G.A. Aizpurua, A. Delgado, A. Olarra
Fundación TEKNIKER, Elbr (Guipuzkoa), Spain

Funding: Device developed in EMRP SIB58 ANGLES project.
This work reports on development and characterization of a new concept of Large Range Small Angle Generator, LRSAG. The device is used for the calibration of high precision angle measuring systems, such as autocollimators, levels and encoders. The state of art requirements for the SAG according to autocollimator manufacturers and users are: ±3600" stroke, 0.001" resolution, high stability and portability. The key element behind the angular motion generation consists on a flexure mechanism. This approach makes possible to reduce the overall size of the LRSAG. Moreover, the mechanism consists on a Parallel Kinematic Mechanism that supports the end effecter, enabling high stiffness and high eigenfrequencies. The mechanisms is actuated by two piezo linear stages that provide large stroke (20 mm) and very high resolution (2 nm in closed loop mode). Two independent measuring systems are also integrated in the angle generator. These systems provide feedback about the position of the moving platform based on imaging systems. One of the measuring systems is a novel "planar differential absolute 3 DOF measurement device". The second system consists on linear encoder technology.

Export •

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

MOPE13

The 20m/s CERN Fast Vacuum Wire Scanner Conceptual Design and Implementation

29

J. Herranz
Proactive Research and Development, Barcelona, Spain
W. Andreazza, N. Chritin, B. Dehning, J. Emery, D. Gudkov, P. Magagnin, S. Samuelsson, J.L. Sirvent, R. Veness
CERN, Geneva, Switzerland
A. Barjau
Universitat Politécnica de Catalunya, Barcelona, Spain

In the next years the luminosity of the LHC will be significantly increased. Therefore a much higher accuracy of beam profile measurement than actually achievable by the current wire scanner is required. The new performance demands a wire travelling speed up to 20 m/s and a position measurement accuracy of the order of 1 µm. In order to minimize the error source of the wire position measurement, a challenging concept has been developed which consists of the placement of the motor rotor and the angular position sensor in vacuum. The implementation of this new concept requires the use of a magnetic brake, hybrid vacuum bearings, the design and production of very thin (<0.5mm) wall vacuum chamber regions and the production of titanium components by 3D additive technologies. The implementation of this new concept has required different optimization processes as the structural optimization under dynamic load of the most critical rotating elements or the optimization of the control system and the motion pattern. This contribution gives an overview of the new device design and shows the different technical solution applied to develop the new concept in a successful way.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE13

About •

paper received ※ 10 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

Export •

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

MOPE14

Optical Laser in-Coupling of the SCS Instrument at the European XFEL

J.T. Delitz, R. Carley, M. Izquierdo
XFEL. EU, Hamburg, Germany
C. Broers, A. Scherz
European XFEL, Schenefeld, Germany

To facilitate pump-probe time-resolved studies, an optical laser in-coupling device (LIN) will be located on the Scattering and Coherent Spectroscopy instrument between the Kirkpatrick-Baez (KB) X-ray focusing mirrors and the exchangeable interaction chamber. The main function of the LIN is to bring the optical pump laser to the sample. Optical pump laser pulses can be generated in a range of wavelengths, pulse energies and pulse durations and are synchronized to the FEL pulse sequence. The main feature of the LIN is a set of four in-vacuum mirrors for different wavelengths that can be selected without breaking vacuum. The mirror stack is mounted on a vertical translator with ball-screw- driven linear guides attached to the base granite for stability. Each 2-inch piezo driven mirror holder allows an on-axis or off-axis configuration with respect to the X-ray beam. With a total length of 940 mm the LIN also includes a proper image based diagnostic for the pump laser as well as the FEL beams. To maintain the pressure in the KB mirror chamber two-stages of differential pumping are also included in the setup.

Export •

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

MOPE15

Cam Mover Alignment System Positioning with Wire Position Sensor Feedback for CLIC

32

J. Kemppinen, Z.S. Kostka, H. Mainaud Durand
CERN, Geneva, Switzerland
J. Kemppinen
ETH, Zurich, Switzerland

Compact Linear Collider (CLIC) is a study of an electron-positron collider with nominal energy of 3 TeV and luminosity of 2·10³⁴ cm^-2·s^-1. The luminosity goal leads to stringent alignment requirements for single quadrupole magnets. Vertical and lateral offset deviations with regards to a given orbit reference in both ends of a quadrupole shall be below 1 µm and quadrupole roll deviation shall be below 100 µrad. Translation in the direction of particle beam is not controlled but mechanically locked. A parallel kinematic platform based on cam movers was chosen as system for detailed studies. Earlier studies have shown that cam movers can reach the CLIC requirements through an iterative process. The paper presents new modular off-the-shelf control electronics and software including three optional positioning algorithms based on iterations as well as a more advanced algorithm which can reach target position in one movement. The advanced algorithm reads wire position sensors (WPS), calculates quadrupole orientation based on the readings and updates the remaining trajectory during motion. All of the optional positioning methods reach the CLIC positioning requirements within minutes.

Poster MOPE15 [0.425 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE15

About •

paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

Export •

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

MOPE16

Development of the RIXS Manipulator

35

H. Jöhri, C. Hess, L. Nue, L. Patthey, T. Schmitt
PSI, Villigen PSI, Switzerland

The RIXS Manipulator (RIXS = Resonant Inelastic X-ray Scattering) is a further development of the Carving Manipulator. The carving manipulator has six independent degree of freedom. (Three translations and three rotations). All three rotations are exactly in the middle of the sample surface. The head of the manipulator is in UHV and the sample can be cooled down to 10K. For the RIXS manipulator there is a new requirement to have a field of view from 0-180°. There are mainly two parts in the carving manipulator that set the probe in the shadow of the beam at small angles. - A bellow - The bearings To solve these problems we shifted the bellow behind the pivot point. This give some strange movements of the bellows and we had to analyse this in a separate test installation. For the bearings, we developed a goniometer bearing with ceramic bearing shells. Meanwhile the RIXS manipulator is implemented and in routine operation

Poster MOPE16 [1.357 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE16

About •

paper received ※ 09 September 2016 paper accepted ※ 14 September 2016 issue date ※ 22 June 2017

Export •

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

MOPE17

OCTOGLIDE - Table Positioning Device for Diffraction Applications

38

G. Olea, N. Huber
HUBER Diffraktiontechnik GmbH&Co.KG, Rimsting, Germany

A new Table Positioning Device(TPD) for high precision and heavy load manipulations has been developed. Conceived as an alternative to the precision hexapods it fulfils the gap of sample (and/or, instruments) positioning in small (height) available working spaces of synchrotron Diffractometers (Dm). The concept is based on a Redundant Parallel Kinematic Structure (Rd-PKS) with four (4) legs having 2 dof active joints (actuators). In this Proof of Functionality (PoF) step, a stacked solution has been adopted for actuators design using the existent XY translation Positioning Units (Pu). The symmetrically modular 6-4(PP)PS precision mechanism - OCTOGLIDE(OG) having eight (8) gliding actuators (P) is implying also a pair of wedges - Elevation (El) and socket/ball - Guiding (G) Pu, as passive joints (P and S) forming one of the Positioning modules (Pm). Spatial positions can be reached without any singularities and planar motions along/around X or Y axis are performed very intuitively with some of the actuators (decoupled) motion. The first tests of the prototype are revealing both, high accuracy (straightness, flatness, etc) and stiffness capabilities.
* Merlet JP, Parallel robots, Springer, 2006

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE17

About •

paper received ※ 09 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

Export •

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

MOPE18

Real-Time Motor Control System for Beamlines

41

C.F. Chang
NSRRC, Hsinchu, Taiwan

To improve the stability and accuracy of motor control system for beamlines, the beamlines with motor adjustment mechanism collocate with the real-time firmware motor control system through the high-definition motor mechanism. Because the real-time motor control system does not need to be connected with the computer for a long time, it improves the speed, stability and accuracy of closed loop operation and thus promotes the controlling ability of motor. As a result, the real-time motor control system will improve the stability and accuracy of the entire motor control system with beamlines.

Poster MOPE18 [2.797 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE18

About •

paper received ※ 09 September 2016 paper accepted ※ 22 September 2016 issue date ※ 22 June 2017

Export •

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

MOPE19

Mechatronics Concepts for the New High-Dynamics DCM for Sirius

44

R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno
LNLS, Campinas, Brazil
M.J.C. Ronde, T.A.M. Ruijl, R.M. Schneider
MI-Partners, Eindhoven, The Netherlands

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM is under development at LNLS for the future X-ray undulator and superbend beamlines of Sirius. Aiming at inter-crystal stability of a few tens of nrad and considering the limitations of the current DCM implementations, several aspects of DCM engineering are being revisited. The system concept is chosen such that a control bandwidth in the order of 200 to 300 Hz can be achieved. This requires well-designed system dynamics, which can be realized by applying a fundamentally different architecture than that used in common DCM designs, based on principles used in ultra-precision systems for semiconductor manufacturing. As a result, known disturbances can be attenuated or suppressed, and internally excited modes can be effectively handled. The mechatronics concepts and analyses, including the metrological details, are shown.

Poster MOPE19 [5.423 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE19

About •

paper received ※ 11 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017

Export •

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

TUCA05

The New High Dynamics DCM for Sirius

141

R.R. Geraldes, R.M. Caliari, G.B.Z.L. Moreno, L. Sanfelici, M. Saveri Silva, N.M. Souza Neto, H.C.N. Tolentino, H. Westfahl Jr.
LNLS, Campinas, Brazil
T.A.M. Ruijl, R.M. Schneider
MI-Partners, Eindhoven, The Netherlands

Funding: Brazilian Ministry of Science, Technology, Innovation and Communication
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline, since it directly affects the beam quality with respect to energy and position. The new 4th generation machines, with emittances in the range of order of 100 pm rad, require even higher stability performances, in spite of the still conflicting factors such as high power loads, power load variation, and vibration sources. A new high-dynamics DCM (Double Crystal Monochromator) is under development at the Brazilian Synchrotron Light Laboratory for the future X-ray undulator and superbend beamlines of Sirius. Aiming at an inter-crystal stability of a few tens of nrad (even during the Bragg angle motion for flyscans) and considering the limitations of current DCM implementations, several aspects of the DCM engineering are being revisited. In order to achieve a highly repeatable dynamic system, with a servocontrol bandwidth in the range of 200 Hz to 300 Hz, solutions are proposed for a few topics, including: actuators and guides, metrology and feedback, LN2 indirect cooling, crystal clamping, thermal management and shielding. The concept of this high-dynamics DCM will be presented.

Slides TUCA05 [2.254 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUCA05

About •

paper received ※ 11 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017

Export •

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