The Proteox dilution refrigerator from Oxford Instruments
A step change in system modularity
TMnanoscience.oxinst.com/proteox

The ProteoxTM dilution refrigerator enables astep change in Cryofree® system modularity designed for enhanced adaptability, reliability
and increased experimental capacity.
Proteox / p1

Future-proof investment
Fully cross-compatible and upgradeable
Secondary Inserts can be exchanged between
current (ProteoxMX or ProteoxLX) and futuresystems in the Proteox family.

Greater control
A patented gas gap heat switch system provides
active control of thermal conductivity between
plates.

Fast, tuneable cool down
When combined with our bottom loader
technology, it enables rapid cool downof sample pucks from 300 K.

High temperature operation
With independent control of the experimental
plate in excess of 30 K with magnet at full field
and fast recovery to base temperature.

Reliability and convenienceNew gas handling system delivers increased
reliability and longer service intervals. This iscombined with a new, powerful software
control system.

Maximise system value
Customisable, self-supporting Secondary Insert
enhances adaptability to varied application
requirements and enables rapid exchange of fullexperimental set-ups.

Simple, powerful software- Web-based, platform-independent control
software- Published API interface allows full programmaticcontrol- Event log tracking

Multi-user and multi-experiment
DC wiring, coaxial wiring, cold electronic components
and samples can be fully integrated on to multiple
Secondary Inserts for easy removal, modificationand exchange.

- Powerful system logfile visualisation- Smart session management for multi-useraccess- Secure database for logging of system data
- Step-by step wizard for guiding manual processes.

Unlock new applicationsIncreased capacity for components, experimental
services and sample mounting to facilitate qubit
scale-up and QIP applications.

High input/output capability
Enables high input/output applications throughabundant line-of-sight (LOS) access.
Extensive experimental volume
Large diameter mixing chamber plate, combinedwith increased plate spacing.

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The ProteoxTM FamilyProteoxMX
The largest in its class dilution refrigerator withextensive capacity for components, experimental
services and sample mounting for highinput/output applications.

ProteoxLX

Providing maximum qubit counts with large
sample space and ample coaxial capacity forquantum computing scale-up.

Proteox5mK

The world’s coldest, continuous, cryogen-free
dilution refrigerator, providing ultra-low basetemperature of < 5 mK and high cooling power of> 25 µW at 20 mK.

Proteox / p5

The ProteoxTM Secondary Insert is acustomisable, self-supporting module toenable installation and exchange of fullexperimental set-ups.

Overview
Moving beyond standard access ports, the SecondaryInsert can accommodate full experimental
set-ups, including DC wiring, coaxial wiringand signal conditioning components.
- Flexible, modular format enhances adaptability tovaried application requirements- Large 117 × 252 mm rectangular LOS access port.
This can be configured as a single customisable
plate, or with 2 × ISO100 ports and a range ofstandard wiring options.

Standard Configurations
ISO100 Port Configurations: A standard configurationof 2 x ISO100 ports, with multiple ISO100 options toprovide experimental wiring.
- Up to 37 UT85 coax per ISO100 port
- Blanking plate option with tapped M3 grid arrayfor mounting of experimental hardware.
Optional Blank Plates Instead Of Secondary Insert- If a Secondary Insert is not required, there is an
optional blanking plate with tapped M3 grid arrayfor useable experimental space.

Custom Configuration- Components can be directly mounted onto
the Secondary Insert plate, creating a platform
tailored to your experiment- Custom configurations enable up to 128 UT85
coax lines per Secondary Insert- Customisable insert for experimental wiring
optimisation- Components mounted directly onto the SI tomaximise space.

Cryogenic Low Noise Amplifiers And RFComponents.
A selection of low noise amplifiers, isolators andcirculators can be integrated into the wiringconfiguration.
- Custom bracketry for mounting hardware amplifiers, isolators etc- Signal conditioning mounted in-line tomaximise the number of components.

Proteox / p8

Key Specifications
Features / Specs

MX300

MX500

Base temperature< 10 mK< 10 mK

Cooling power at 20 mK> 10 μW> 12 μW

Cooling power at 100 mK> 400 μW

> 450 μW

Sample Space Diameter

360 mm

360 mmLine of Sight
Access

1 × Secondary Insert(117 × 252 mm)
2 × KF40, 2 × KF25

1 × Secondary Insert(117 × 252 mm)
2 × KF40, 2 × KF25

PTR Options

1 × 1.35 W, 1.50 or 1.80 W

1 × 1.35 W, 1.50 or 1.80 W

Temperature
Control Range

10 mK to 30 K withmagnet at full field

10 mK to 30 K withmagnet at full field

Magnet Options

Standard solenoid 1T to 14T
Cancelled solenoid 12 T to 14 T
Vector rotate:
6-1-1 T to 9-1-1 T
Custom by request

Standard solenoid 1T to 14T
Cancelled solenoid 12 T to 14 T
Vector rotate:
6-1-1 T to 9-1-1 T
Custom by request

Bottom loader Options

60 mm, 96 DC, 22 coax
72 mm, 96 DC, 28 coax
Dependent on magnet
selection

60 mm, 96 DC, 22 coax
72 mm, 96 DC, 28 coax
Dependent on magnet
selection

Secondary insert

1 × Secondary Insert(117 × 252 mm)
Fully customisable tointegrate wiring andsignal conditioning

1 × Secondary Insert(117 × 252 mm)
Fully customisable tointegrate wiring andsignal conditioning

Temperature stability± 1 mK < 100 mK, ± 1 %> 100 mK

± 1 mK < 100 mK, ± 1 %> 100 mK

Helium 3 Requirment

13 L18 LLX500

LX900

5mK 900< 10 mK< 7 mK< 5 mK> 12 μW> 25 μW> 25 μW> 450 μW

> 850 μW

> 850 μW

530 mm

530 mm

360 mm

2 × Secondary Inserts(117 × 252 mm)
4 × KF25

2 × Secondary Inserts(117 × 252 mm)
4 × KF25

1 × ISO100, 1 × KF63

2 × 1.35 W, 1.50W or 1.8 W

2 × 1.35 W, 1.50W or 1.8 W

1 × 1.35 W, 1.50 or 1.80 W

10 mK to 30 K withmagnet at full field

7 mK to 30 K withmagnet at full field

5 mK to 30 K withmagnet at full field

Standard solenoid 1T to 14TCancelled solenoid 12 T to 14 T
Vector rotate:
6-1-1 T to 9-1-1 T
Custom by request

Standard solenoid 1T to 14T
Cancelled solenoid 12 T to 14 T
Vector rotate:
6-1-1 T to 9-1-1 T
Custom by request

Standard solenoid 1T to 14T
Cancelled solenoid 12 T to 14 T
Vector rotate:
6-1-1 T to 9-1-1 T
Custom by request

60 mm, 96 DC, 22 coax
72 mm, 96 DC, 28 coax
Dependent on magnet
selection

60 mm, 96 DC, 22 coax
72 mm, 96 DC, 28 coax
Dependent on magnet
selection

By request

2 × Secondary Insert(117 × 252 mm)
Fully customisable tointegrate wiring andsignal conditioning

2 × Secondary Insert(117 × 252 mm)
Fully customisable tointegrate wiring andsignal conditioningNone± 1 mK < 100 mK, ± 1 %> 100 mK

± 1 mK < 100 mK, ± 1 %> 100 mK

± 1 mK < 100 mK, ± 1 %> 100 mK

18 L

50 L

50 L

2 × KF40, 2 × KF25

Proteox / p10

Proteox Platform
Optimised to provide long term reliability,stability and ease of use.
Software- Remote access through a web-based, platform-independentcontrol software in addition to local system control- Automation routines for one button operation- Full manual control and programmable API interface forcustom routines- Powerful data interrogation and visualisation package withlive plotting- Step-by step wizard for guiding manual processes.

System- Fully redeveloped new gas handling system to ensure theminimum number of connections and o-ring seals- Cross-braced stiffened frame that minimises vibrationtransmission eliminating the need for active damping- Modular, upgradable platform with cross-compatible
magnet systems.

Proteox / p12

Magnet Technology
In-house design, manufacturing and supportof both the dilution refrigerator and thesuperconducting magnet provides a fully
integrated system with unified software
control and data logging.

Magnet Technology- Built-in quench protection circuits- Bolted current lead connections for easy removal or upgrade- Integrated sensor for temperature monitoring.

Solenoid magnets- Range of field strengths from 1 T to 14 T
- Central field homogeneity of 0.1 % over 10 mm D.S.V across the range- High current, low inductance designs reducing conductor thermal mass and improving cool down times- Persistent mode operation < 0.01 % hr-1 as standard- Large bore sizes from 77 mm to 150 mm diameter across the standard solenoid magnet range- Typical ramping times of < 1 hour from 0 to rated field.
Magnet Options

Bottom Loader Puck Options

Magnetic Field / T

Bore / mm

Puck Dia. / mm

Puck Connectivity

Up to 14Up to 90

Up to 72

up to 28 coax, 96 DC

Vector rotate magnets- Three axis vector magnets with a vertical field up to 9 T and a horizontal field up to 3 T- Driven magnets as a standard with no persistent switch- Typical ramp rates of 0.25 T/min- 90 mm large bore across all field vector rotate options- Typical tilt at 2.5 degrees for the maximum field axis e.g. 6-2-1 gives 6 T vector modulus, full rotation about the Y axis
- Full spherical rotation at the lowest rated axis e.g. 6-2-1 gives 1 T vector modulus, full rotation in a sphere about anyaxis or combination.
Magnet Options

Bottom Loader Puck Options

Magnetic Field / TBore / mm

Puck Dia. / mm

Puck Connectivity

Up to 9,1,19072

28 coax, 96 DC

Customised Magnets
Beyond standard offering, our in-house team can design bespoke magnets to meet your experimental needs.
Full FEA and electromagnet modelling capabilities ensure the integration of the magnet to the system is robustin terms of both magnet and system performance.
Optimised for:- Higher persistence- Split pair configurations for optical access- Custom vector combinations including optical vector magnets and persistent vector magnets- Higher homogeneity over standard volumes or custom sample volumes with defined homogeneities- Higher resolution- Stray field reductions using active shield technology- Gradient coils- Field cancellation to < 0.01 T at the mixing chamber plate for sensitive equipment.

Proteox / p14

Options available to enhance the utility ofyour system with customisable features for
specific applications.

Sample pucks for rapid exchange
Our patented, market leading sample loading mechanism allows
for fast and easy sample exchange, without the need to warm theentire system to room temperature:- Loading a sample puck takes less than 15 minutes and the system
automatically cools back to base temperature- Up to 28 RF and 96 DC connections on a single sample puck- Ideal solution for multi-user facilities since different experiments
can be prepared in multiple sample pucks- Patented loading concept allows for safe and easy operation.

SampleProtect system secures against ESD
SampleProtect enables grounding or bias of samples during
sample exchange to safeguard your experiments. It provides
users with a method of protecting sensitive samples from
accidental electrostatic discharge (ESD).
High quality, fully earthed cables for low level signals:- Low noise- High attenuation shielding- Low cross-talk.
BNC or Twinax option.
24 connectors and 12 twisted pairs.

Proteox / p15

Service Support Options
Live Assist
Live assist remote support empowers your technical staff to resolve
issues fast and effectively. Our team of service and engineering
professionals use the latest virtual reality tools to support you remotely.

For more productinformation pleasecontact your regional
office:Oxford, UK+44 1865393200

Proactive Support Plan
Offering unlimited access to a dedicated Proactive helpdesk and annual
service that includes maintenance, training, parts, shipping and travel.
The Proactive Support Plan package is for those who require a higher
level of guaranteed support.

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US, Canada and Latin America
Toll free +1 800 447 4717

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