Montana Instruments Cryostation s50-MO User manual

4101-DOC001
Option User Manual
Magneto-Optic Module
Cryostation s50 –MO
Version: 2.1
December 2020
www.montanainstruments.com
[e-mail]
+1.406.551.2796
101 Evergreen Drive
Bozeman, MT 59715, USA

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Specifications and product information listed in this document are accurate to the time of publishing
for a standard system. Options, custom designs, and/or other modifications may cause slight
differences. Future design changes to the system, including software updates, may change information.
© Montana Instruments® Corporation, All Rights Reserved
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means,
including photocopying, recording, or other electronic or mechanical methods, without the prior written
permission of Montana Instruments.
Montana Instruments, Cryostation, nanoReveal, microReveal, Cryo Optic, and ATSM are trademarks of
Montana Instruments Corporation. Other brand names used are the property of their respective owners.

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Table of Contents
Section 1 - Preface ........................................................................................................................................................ 6
1.1 Conventions Used in this Manual...............................................................................................................................7
1.1.1 Abbreviations................................................................................................................................................................................ 7
1.1.2 Explanation of Safety Warnings.............................................................................................................................................7
1.1.3 Graphical Symbols ...................................................................................................................................................................... 8
1.2 General Hazard Information....................................................................................................................................... 9
1.3 Technical Support Information .................................................................................................................................10
1.3.1 Warranty & Repairs ..................................................................................................................................................................10
1.3.2 Accessories & Replacement Parts.......................................................................................................................................10
1.3.3 Contact Details ...........................................................................................................................................................................10
Section 2 - Option Overview..................................................................................................................................... 11
2.1 Magneto-Optic.............................................................................................................................................................. 11
2.1.1 Intended Use...............................................................................................................................................................................11
2.1.2 Components................................................................................................................................................................................11
2.1.3 Technical Specifications..........................................................................................................................................................13
2.1.4 Performance Data .....................................................................................................................................................................14
2.1.5 Safety Information ....................................................................................................................................................................17
Section 3 - Option Installation & Handling...........................................................................................................19
3.1 Packaging Contents .....................................................................................................................................................19
3.2 Component Placement and Layout Plan ................................................................................................................19
3.3 Unpacking the Magnet Power Supply ....................................................................................................................19
3.4Connecting System Cables and Power................................................................................................................... 20
Section 4 - Option Configuration........................................................................................................................... 22
4.1 Configuring the Magnet Housing ........................................................................................................................... 22
4.1.1 Installing the Magnet Housing ............................................................................................................................................22
4.1.2 Installing or Changing Pole Tips..........................................................................................................................................26
4.1.3 Window Replacement .............................................................................................................................................................26
Section 5 - Option Usage & Operation ................................................................................................................. 27
5.1 Primary Operations ..................................................................................................................................................... 27
5.1.1 Turning on the System............................................................................................................................................................27
5.1.2 Controlling Field Strength .....................................................................................................................................................27

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5.1.3 True Zero ......................................................................................................................................................................................28
5.2 Hall Probe Calibration ................................................................................................................................................ 29
Section 6 - Maintenance & Troubleshooting.......................................................................................................30
6.1 Care & Maintenance Procedures ............................................................................................................................. 30
6.1.1 Adding Coolant to the Reservoir ........................................................................................................................................30
6.1.2 Coolant Drain Procedure........................................................................................................................................................32
6.2 Diagnostics & Troubleshooting ............................................................................................................................... 36
6.2.1 Magnet Errors .............................................................................................................................................................................36
6.2.2 Magnet Diagnostics .................................................................................................................................................................36
Section 7 - Appendices.............................................................................................................................................. 37
7.1 Related Documentation............................................................................................................................................. 37
7.1.1 Declarations of Conformity ...................................................................................................................................................37
Manual Addendum........................................................................................................................see Supplement A

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Section 1 - Preface
WARNING
Read all instructions before using this product
All users must read and understand this manual and all other safety instructions before using the
equipment. Retain these instructions for future reference.
This manual is intended for users of the Montana Instruments products and systems described herein.
Users include anyone who may physically interact with the system or peripheral equipment, including
installing, setting up, or configuring the system or anyone who may operate system components via
operating panels, the supplied user interface, or remote interfaces.
This manual may be used by facilities personnel for determining infrastructure requirements in the
room or building where the equipment will be installed.
This manual should be referenced by authorized service personnel for important safety and hazard
information and other product restrictions.

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1.1 Conventions Used in this Manual
The following style conventions are used in this document:
•Vertical bar ( | )
oIndicates alternative selections. The bar may be used in place of “and” or “or”.
•Alphanumeric List (1., 2., 3…| a., b., c…)
oIndicates instructions or actions which should be completed in a specific ordered
sequence.
•Bulleted List (•| ◦ | -)
oIndicates instructions, commands, or additional information about an action.
oMay alternatively be used for unordered lists of materials or additional reference notes.
•Courier Font
oIndicates a label or indicator on a physical product or part.
oIndicates a system output, such as a display reading.
oMay also be used for URLs, file paths, file names, scripting language, prompts, or syntax.
1.1.1 Abbreviations
The following abbreviations may be used:
•ACM: Ancillary Control Module
•CAN: Controller Area Network
•DMM: Digital Multimeter
•HDMI: High Definition Multimedia Interface
•MI: Montana Instruments
•PCB: Printed Circuit Board
•TCM: Temperature Control Module
•UI: User Interface
•UPS: Uninterruptible Power Supply
•USB: Universal Serial Bus
•VNC: Virtual Network Computing
•International System of Units (SI) symbols
•System of Imperial Units symbols
•Element, molecule, and compound abbreviations
1.1.2 Explanation of Safety Warnings
Safety and hazard information includes terms, symbols, warnings, and instructions used in this manual
or on the equipment to alert users to precautions in the care, use, and handling of the system. The
following hazard levels and information are considered:

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DANGER
Serious personal injury
Imminent hazards which, if not avoided, will result in serious injury or death.
WARNING
Serious personal injury
Potential hazards which, if not avoided, could result in serious injury or death.
CAUTION
Possible personal injury
Potential hazards which, if not avoided, could result in minor or moderate injury.
NOTICE
Command or Product Safety Notice
Potential hazards which, if not avoided, could result in product damage.
» NOTE
Points of particular interest for more efficient or convenient equipment operation; additional
information or explanation.
1.1.3 Graphical Symbols
The following symbols may be used in diagrams, supporting text, and on physical parts:
Hazard Alert: General Warning
Hazard Alert: High Voltage
Hazard Alert: Laser Radiation
Hazard Alert: Magnetic Field
Hazard Alert: Hot Surface
HDMI port
CAN bus module
USB port

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1.2 General Hazard Information
The following descriptions are of general hazards and unsafe practices that may result in product
damage, severe injury, or death.
•The products, parts, and components in this manual are to be serviced by authorized Montana
Instruments service representatives only. Failure to do so will void the warranty and may
damage the product and/or create a safety hazard.
•Only use all components provided for the intended purpose described herein.
•If the equipment or any component is used or modified in a manner not specified by the
manufacturer, the protection provided by the equipment may be impaired.
The following hazards may be typical for this product:
WARNING
Risk of injury when lifting or moving system components
System components, including standalone equipment and installed assemblies, may be heavy.
•Use caution when lifting or moving equipment or assemblies. Ensure proper lifting principles are
used to avoid injury.
•Equipment or assemblies >20 kg should always be lifted by two or more people or with a suitable
lifting device.
WARNING
High voltage: danger of electric shock
Electric shocks and burns from capacitor discharge or power circuits could lead to serious injury or
death.
•Before turning on any power supply, the ground prong of the power cord plug must be properly
connected to the ground connector of the wall outlet. The wall outlet must have a third prong or
must be properly connected to an adapter that complies with these safety requirements.
•Only use replacement power cords or power plugs with the same polarity and power rating as
that of the original ones. Do NOT use inadequately rated cables.
If the equipment or the wall outlet is damaged, the protective grounding could be disconnected.
•Do NOT use damaged equipment until its safety has been verified by authorized personnel.
•Do NOT disconnect or tamper with the operation of the protective earth terminal inside or
outside the apparatus.
NOTICE
Only clean exterior surfaces with acceptable fluids
•Only use deionized water, glass cleaner, or isopropyl alcohol to clean the exterior surfaces of any
enclosure. Do NOT use any volatile chemicals other than isopropyl alcohol.
•Apply fluid to a clean, lint-free cloth and wipe surface with cloth. Do NOT apply fluid directly to
any surfaces or enclosures.

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1.3 Technical Support Information
Any technical questions or issues with the system that cannot be resolved with the information in this
manual should be referred to an authorized Montana Instruments service representative.
1.3.1 Warranty & Repairs
If the system or parts need to be returned to the Montana Instruments factory or an authorized service
center for repair or service, contact an authorized service representative for a return merchandise
authorization (RMA) number and instructions on returning the unit.
For a copy of the Limited Warranty Agreement, visit: www.montanainstruments.com/About/Warranty
1.3.2 Accessories & Replacement Parts
Only use cables, hoses, accessories, and parts provided or approved by the manufacturer. Follow all
instructions for proper installation or replacement.
•To order spare or replacement parts, please contact your local service representative.
•To order new accessories or options, or for more information on other Montana Instruments
products and technologies, please contact your local sales representative.
1.3.3 Contact Details
For a complete list of sales and service centers visit: www.montanainstruments.com/Contact
North American Authorized Service
•M-F 8:30am-5pm MST | Call: +1.406.551.2796
•Email: [e-mail]
North American Sales
•M-F 8:30am-5pm MST | Call: +1.406.551.2796
•Email: [e-mail]
International Sales & Authorized Service
•Visit www.montanainstruments.com/Contact/Sales-Offices for contact information for your local
representative.

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Section 2 - Option Overview
2.1 Magneto-Optic
Models
Part Numbers
Cryostation s50 - MO
4101-122
Front View of Magneto-Optic
Top View of Magneto-Optic
2.1.1 Intended Use
The Magneto-Optic module is an add-on option for the Montana Instruments Cryostation s50 model
that integrates a bipolar electromagnet with the sample space. The assembly allows the user to place
their sample between the magnet poles above the cryogenic platform.
2.1.2 Components
The Magneto-Optic module consists of an electromagnet housing and a bipolar power supply and
cooling unit. The main system user interface touchscreen provides the operational control of the
magnet and power supply.
Electromagnet and Sample Chamber
The electromagnet housing replaces the upper vacuum housing on the cryostat sample chamber. The
assembly consists of an upper vacuum housing with two magnet poles entering on opposite sides. The
magnet poles tips are interchangeable to focus the field intensity. The left and right solenoids
surrounding the housing are built above a rigid base structure (yoke) that sits on the optical table.
The standard configuration includes two primary optical access windows on the upper vacuum housing
perpendicular to the magnet axis. The vacuum housing lid also contains a 50 mm window for overhead
optical access. A 6 mm bore through the center of the magnet poles provides in-plane optical access
into the sample chamber.
An adjustable radiation shield inside the sample chamber has side walls that can be moved in or out to
accommodate various sample geometries and pole tip spacing. The radiation shield includes five “cold”
windows for optical access.

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Power Supply
The power supply provides a 500 W linear bipolar current source with 20 bit resolution for fine control
of the field strength. The power supply unit also contains the cooling system for the magnet and three
fans to dissipate heat. The unit connects to the electromagnet, system control unit, and compressor.
Magneto-Optic Power Supply
Magneto-Optic with Hall Probe Sensor
The power supply communication ports and connections are outlined below:
BNC (ANALOG INPUT)
The analog input is an optional input whereby a signal generator or other compatible voltage source
may be used to modulate the field. This input will directly modulate the current used to create the field
with the transfer function described in the Technical Specifications on page 13. Due to saturation-related
non-linearities in the coil, the relationship between the current and the field is also non-linear. See
Figure 1 on page 14 for an illustration of this relationship. The maximum voltage to be applied to this
terminal is ±10 V; exceeding this value may result in damage to the equipment. The analog input
cannot be used while a calibration of the magnet is in progress.
DSUB9 (CAN-BUS PORT A / B)
The two upper DSUB9 ports on the rear face of the enclosure are used to interface with the Montana
Instruments helium compressor (Port A) and system control unit (Port B). These provide communication
with the CAN bus module for controlling the instrument via the user interface.
DSUB9 (AUXILIARY I/O PORT & AUXILIARY MAGNET I/O)
The two lower DSUB9 ports on the rear face of the enclosure are to be used only with expansionary
devices and accessories offered by Montana Instruments. For more information about the usage and
capabilities of these ports, contact an authorized service representative.

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DSUB13W3 (MAGNET INTERCONNECT)
A combination 13W3 combination D-Subminiature port is used to connect the electromagnet housing
and power supply. This connection provides the field current and monitors temperature of the
electromagnet housing.
Hall Probe Sensor
A Hall probe sensor is provided for running calibration routines on the unit. The Hall probe sensor fits
onto the top of the magnet housing and connects to the front of the power supply via the supplied
cable.
2.1.3 Technical Specifications
Environmental Specifications
Temperature of Environment (Storage)
5 –40 °C
Temperature of Environment (Operational)
15 –40 °C
Humidity
5 –80% non-condensing
Power Specifications
Model
4101-132
Mains Power Connector on Unit
IEC 60320 C20
Line Voltage
100 –240 VAC
Frequency
50 –60 Hz
Maximum Current Draw
13 A
Maximum Power Consumption
1300 W
Wall Outlet /
Receptacle
N. America & non-EU
Standard NEMA 5-15
CEE Europe (non-UK)
CEE 7/3 or CEE 7/5 w/ common ground terminal
UK
BS1363 (UK) w/ common earth ground terminal
Israel
I-32-3 w/ common earth ground terminal
Electrical Connections
Magnet Interconnect
13W3 D-Subminiature
Communications
9-pin D-Subminiature MI CAN Bus
Grounding Terminal
4mm Banana Jack and Screw Terminal
Physical Dimensions
Component
L x W x H
Mass
Power Supply (4101-132)
51 cm x 21 cm x 110 cm
15 kg (dry)
Magnet Housing
15 cm x 26 cm x 15 cm
10 kg (dry)

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Magneto-Optic Specifications
Field
With 12 mm Pole Tips
Range
-0.7 to 0.7 Tesla
Resolution
<5 µTesla
Accuracy
<2% of RangeNOTE 1
Noise and Ripple
<10 µTeslaRMSNOTE 2
Uniformity
Axial
1% - ±0.1 inch from Center; 0.1% - ±.05 inch from Center
Radial
1% - ±0.25 inch from Center; 0.1% - ±0.15 inch from Center
Full Field De-Rating
2% of Range / °C for Ambient >25°CNOTE 3
Temperature Coefficient
<±0.3% / °C Ambient
1) Accuracy specified immediately following a True Zero operation at operating temperature
2) Noise and Ripple measured from 45 to 800 Hz
3) Higher field is possible for a limited time but may result in over-temperature fault and ‘Safe Mode’ trigger
Analog Input
Input Impedance
~5 kΩ
Input Range
±10 V MAX
Current Gain
-3.1 A/V
Cooling System
Pressure
Atmospheric
Required Coolant
Propylene Glycol (Koolance 705 Liquid Coolant Part No. LIQ-705CL-B)
2.1.4 Performance Data
Figure 1: Field vs. Current

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Figure 2: Radial Field Uniformity, 0.1% uniformity at 4mm for ±4mm from center
Figure 3: X distance from center field uniformity, 1% uniformity at ±4mm, and 0.1% uniformity at ±4.5mm

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Figure 4: Field vs. Current for various pole spacings*
» NOTE
*Pole tip spacing of <5mm will increase base temperature
To achieve a 5mm pole tip spacing, the radiation shield will need to be removed. Doing so will
increase the base temperature by several Kelvin.

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2.1.5 Safety Information
The following hazards may be typical for this product:
•The module must be used in a normal condition only in which all means of protection are intact.
WARNING
Strong static magnetic field: Potential hazards of magnetic origin may result in minor to
moderate injury and/or equipment damage.
This device generates strong magnetic fields. Fields in excess of 1 Tesla may be inside the sample
chamber during operation, and fields in excess of 0.04 Tesla may be generated immediately outside
the sample chamber area.
•Fields of this intensity may cause medical pacemakers and
neurostimulators to malfunction. Persons relying on medical
pacemakers, neurostimulators, medical implants, or other
sensitive electronic devices should not be allowed near the
instrument.
This device generates a high magnetic field which will interact with ferromagnetic objects.
•If ferromagnetic objects are brought into the vicinity of the magnet, they may be pulled into the
field with significant force and velocity, causing damage to the instrument and/or personal harm.
WARNING
Risk of injury due to hot surfaces
The electromagnet poles generate a significant amout of heat. The poles may be hot to the touch
during operation and stay hot for a period of time after the magnet is powered down.
WARNING
Risk of injury due to sharp edges
The interior of the power supply enclosure contains sheet metal parts that may have sharp edges.
•When working inside the enclosure (authorized service personnel only), exercise caution to avoid
getting cut by these edges.

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WARNING
High voltage: danger of electric shock
Electric shocks and burns from capacitor discharge or power circuits could lead to serious injury or
death.
•Prior to accessing the enclosure or when otherwise servicing the unit (authorized service
personnel only), completely power down the system and unplug the power cable.
•If power must be applied to diagnose issues or otherwise, a grounding strap must be applied to
the arm interfacing internal components.
There are up to 30 amperes of electrical current flowing between the magnet power supply and the
magnet.
•Do NOT apply power to the instrument until all connections are firmly in place and secured with
the provided tool.
•Do NOT attempt to remove any connections while the instrument is in operation.
NOTICE
Take caution to avoid shorts
•Do not short the magnet to ground. Do not short the leads of the magnet to each other. Both of
these conditions may result in permanent damage to the power supply.
Maintain adequate coolant level
•The level of coolant should always be maintained above the orange region on the fluid level
indicator on the front of the power supply. The reservoir is at max fill capacity at the uppermost
blue line –do not fill past this level. Coolant will need to be added if the level falls into the orange
region. See Adding Coolant to the Reservoir on page 30 instructions.
Transportation and installation
•The power supply must remain upright and can be placed on the floor or a nearby shelf. The unit
should not be stacked on any other equipment nor should other equipment be placed on it.
•Allow 10 cm minimum clearance on all sides of the power supply during operation to provide
proper ventilation and allow heat to exit the unit. Ensure the power switch on the back of the unit
can be accessed at all times.
•The power supply should not be placed in the vicinity of any heat source. Doing so will
compromise its cooling ability and maximum field strength.

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Section 3 - Option Installation & Handling
3.1 Packaging Contents
The Magneto-Optic components will arrive packed on their own pallet. One box contains the
electromagnet, cables, and magnet accessories. The other box contains the power supply. The
electromagnet is shipped within a protective hard case that can be re-used for storage or transport.
NOTICE
Inspect shipment upon receipt
Before unpacking the system, please note the condition of the
boxes, shock watch sensors and tilt watch sensors. The boxes
should be intact and strapped to the pallets. If there is any
visible damage or if the sensors have been tripped, contact an
authorized service representative immediately and do NOT
proceed with unpacking.
Shock watch
Tilt watch
Retain equipment packaging for future use
We recommend saving the original equipment packaging (foam, box, and pallets). The packaging is
specially designed to support and stabilize the equipment and will be required if the unit needs to be
transported in the future. Some components must be packed upright on a pallet to avoid damage.
3.2 Component Placement and Layout Plan
Prior to unpacking the system, it is recommended to pre-plan the placement of components in the lab
space. Refer to the System User Manual for a detailed overview of all major components.
The magnet is set on the optical table surrounding the cryostat sample chamber. The power supply
must remain upright and can be placed on the floor or a nearby shelf. It must be located within 10 ft
(3 m) of the system control unit and compressor, and within 10 ft (3 m) of the magnet on the sample
chamber. With the long hose option, the power supply and compressor can be up to 50 ft (15 m) apart,
depending on the length purchased.
3.3 Unpacking the Magnet Power Supply
Locate the power supply box.
1. Remove the box wrap and cut the bands securing the box to the pallet. Carefully lift the box off
the pallet and set on the floor or a nearby surface.
2. Open the side of the box and slide out the power supply and foam.
3. Lift off the top piece of foam.
4. Reach under the unit and lift it out of the lower foam. A second person can assist with this step.
5. Keeping the unit upright, move to the desired location.

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3.4 Connecting System Cables and Power
NOTICE
Only use cables and hoses provided or approved by the manufacturer
Only use the cables and hoses in the manner described below.
Other than the DSUB9 compressor communication cable, the standard communication cables and
hoses between system components do not change. Refer to the System User Manual for instructions on
connecting the standard system cables and other components.
Compressor Communication:
1. Locate the DSUB9 M-F series cable. Connect the M end to the CAN-BUS PORT A location on the
back of the power supply. Connect the F end to the QD-CAN IN location on the back of the
compressor. Tighten both connections with thumbscrews to secure.
2. Locate the DSUB9 F-F series cable. Connect one end to the CAN-BUS PORT Blocation on the
back of the power supply. Connect the other end to the CAN location on the back of the system
control unit. Tighten both connections with thumbscrews to secure.