A.Crisol MARES End Station 23/10/2014
Alejandro CrisolCarles ColldelramLiudmila NikitinaManuel Valvidares
ALBA BOREAS Beamline magnetic resonance scattering, MARES, End Station mechanical design
A.Crisol MARES End Station 23/10/2014
Outline
• Beamline review, status• MARES subsystems, components• Technical specifications• Conceptual design• Calculations• Final design• Assembly status
2
A.Crisol MARES End Station 23/10/2014
Beamline review, status3
• BL29, Boreas is a soft X-ray beamline dedicated topolarization-dependent spectroscopic investigations ofadvanced materials
Beamline optics layout
A.Crisol MARES End Station 23/10/2014
Beamline review, status4
• Two End Stations:– High-field vector magnet, HECTOR, for Soft X-ray
absorption spectroscopy and dichroism– UHV reflectometer, MARES, for resonant soft X-ray
reflectivity and resonant magnetic scattering.
Beamline layout before summer 2014
A.Crisol MARES End Station 23/10/2014
Beamline review, status5
• Sample Transfer system between two End stations
Layout after big intervention to improve stability, summer 2014
Mares(provisional)
Sample Transfer systemHector
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MARES End Station6
• Mares End Station is a complex multicomponentinstrument:
Components involved at Mares
UHV Vacuum Chamber
Vacuum components
Sample Loadlock
Cryo Magnet
Cryomanipulator
Sample Transfer
Ɵ - 2Ɵ Rotary stage
Detectors
Accessories
Future Systems…
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MARES End Station7
All systems must be supported, moved and positioned!
Future Systems…
A.Crisol MARES End Station 23/10/2014
Technical Specifications8
• Two systems:– MARES End Station support:
• High stability system• X, Y, Z regulations• Transversal movement of all systems regarding beam, +/-20mm
with 0,25 – 0,1µm resolution.• Support every subsystems if it is needed• Maximum empty space under chamber to locate magnet
– Cryomagnet tool:• Vertical magnet movement, short travel to exchange samples
and long one to extract the magnet, with 1µm resolution.• X, Y and tilt adjust (small adjustments).• Easy magnet extraction.
A.Crisol MARES End Station 23/10/2014
Technical Specifications9
• MARES End Station support characteristics:
BeamUHV Chamber & Systems
Floor
Stable Support
Empty Space
Magnet &tool
±20mm; 0,2µm
X, Y, Z
A.Crisol MARES End Station 23/10/2014
Technical Specifications10
• MARES Magnet Tool characteristics:
Floor
Support
Extraction Magnet &tool
Sample transference, extraction; 1µm
X, Y
UHV Chamber
A.Crisol MARES End Station 23/10/2014
Conceptual design11
• MARES Support solutions:– Floor fixation– Granite columns, pyramid– Transversal movement– X, Y, Z regulations– Base plate systems– Free space
A.Crisol MARES End Station 23/10/2014
Conceptual design12
• MARES Support solutions, detail:
Fixed
2 spindle systems
X, Y, Z
X, Y
4 sets linear guides
Base plate systems
Granites
4 Airlocs
A.Crisol MARES End Station 23/10/2014
Conceptual design13
• MARES Support movable elements stiffness:– Guides: 1·109 N/m
– Spindle Support: 4,5·108 N/m– Spindle Nut: 7,16·108 N/m– Spindle: 1,8·109 N/m
mNKTot /10·4,2
10·8,1
1
10·2,7
1
10·5,4
11 8
988
=++
=
1·109N/m
Spindle total Rigidity
4,5·108N/m 7,16·108N/m1,8·109N/m
A.Crisol MARES End Station 23/10/2014
Conceptual design14
• MARES Magnet tool solutions:– Supported by support base plate– Placed under support– Vertical movement– Small tilt adjustment– Lateral extraction
A.Crisol MARES End Station 23/10/2014
Conceptual design15
• MARES Magnet tool solutions, detail:X, Y
Fixed on support base plate
Vertical movement
Lateral extraction
Tilt
2 linear guides 2 linear guides, spindle
A.Crisol MARES End Station 23/10/2014
Conceptual design16
• MARES Magnet tool elements stiffness:– Vertical Guides: 1·109 N/m
– Horizontal Guides: 8·108 N/m
– Spindle Support: 4·108 N/m– Spindle Nut: 6·108 N/m– Spindle: 2,5·108 N/m
1·109N/m
Spindle total Rigidity
4·108N/m
6·108N/m
2,5·108N/m
mNKTot /10·22,1
10·5,21
10·61
10·41
1 8
888
=++
=
8·108N/m
A.Crisol MARES End Station 23/10/2014
Conceptual design17
• Full End Station, with dummies:
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Calculations18
• Stability calculations:
ALBA measured ground excitation
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Calculations19
• Stability calculations, results:
The whole system resonance modes are over 40Hz
Mode Frequency [Hz]
1. 42.462
2. 48.995
3. 54.356
4. 56.535
5. 61.99
6. 62.919
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Calculations20
• Stability calculations, results. First resonance mode:
Transversal movement against the spindles
Close to 2 tones movement
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Calculations21
• Stresses and deformations:– Vacuum– Gravity
Negligible stresses on structure, very low deformation
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Calculations22
• Movements resolution
– Support Transversal movement:
• Range, +/- 20mm
• Stepper motor, 1:160 reduction < 0,2µm
– Vertical movement magnet on magnet tool:
• Range, sample exchage travel 264mm; extraction travel, 520mm
• Stepper motor, 1:40 reduction < 1µm
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Final design23
• MARES End Station final design:
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Final design24
• MARES Support and Magnet tool:
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Assembly status25
• MARES Support assembly, parts:
• Magnet tool is still pending fabrication, planned final 2014
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Assembly status26
• MARES Support assembly progress, not finished:
4 naturalgranites
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Assembly status27
• MARES Support assembly progress:
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Assembly status28
• MARES Subsystems, sample transfer system:
A.Crisol MARES End Station 23/10/2014
Assembly status29
• MARES Subsystems, detectors:
CCD armChanneltron arm
Repeatability test
Vibrations test
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Acknowledgements30
• ALBA-CELLS Mechanical Workshop staff• Engineering Alignment group• Josep Nicolàs, Experiments Transversal Section Head• Alejandro Pasqual, Carlos Ortiz
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Thanks for your attention!31
