Measurement Probe Brochures

Transcription

1 Measurement Probe Brochures Papers Cryogenic News March 2012 World s first 18 Tesla Cryogen Free VSM Measurement system with sample rotating He-3 insert Cryocooled Cryostat For Use With Ccc/Josephson Array Inserts

2 CN C R Y O G E N I C N E W S March 2012 World s first 18 Tesla Cryogen Free VSM Measurement system with sample rotating He-3 insert High field magnet system for VSM, Resistivity, AC Susceptibility, Specific heat, and Thermal transport measurements. Variable Temperature Sample Space ( K) High power pulse tube cryocoolers with low vibration Rotating He-3 refrigerator probe for use in Cryogen Free VTI Temperatures down to 300 mk Parasitic He-3 top loaded into the Cryogen Free VTI 24 hour hold time 20 pin CLCC sample holder 5 mm x 5 mm sample mounting area Sample rotation through X o

3 CRYOGENIC NEWS CRYOGEN-FREE SUPERCONDUCTING MAGNET FOR DIAMAGNETIC LEVITATION The vertically-aligned solenoid is housed in a compact cryostat with a 58.5 mm diameter room-temperature bore offering unprecedented accessibility to the levitated sample. A single 1.5 W pulse-tube cold-head is used to cool the magnet system with remote-motor and linear-drive to minimise vibrations. CRYOGEN-FREE TOP LOADING HELIUM-3 REFRIGERATOR At its maximum field the magnet generates a peak levitation force of 1600 T2/m (for water, stable levitation is achieved at a value of 1370 T2/m or above). At this field the levitation point for a water droplet is situated just 22 mm inside the main bore-tube (46 mm below the cryostat top-plate). An optional variable-temperature cryostat is available allowing the full central-field to be used for temperature dependent experiments. Maximum Field: 18.6 T Sample in liquid He-3 for optimum thermal contact This can be supplied with airlock, gate-valve, top-loading measurement probes and parasitic helium-3 for temperatures down to 300 mk. Maximum B.dB/dZ: 1600 T 2 m -1 Bore diameter : 58.5 mm Highest levitation point for water: 46mm below top-plate Central field homogeneity : 0.1 % Temperature control from 260 mk to 300 K Hold-time >24 hours below 300 mk using 10 litre charge of He-3 9 Tesla magnet as standard with options up to 16 Tesla FAST RAMPING 7 TESLA CRYOGEN-FREE MAGNET SYSTEM Cryogenic Ltd has developed a new range of fast-sweeping cryogen-free superconducting magnets using high-performance Nb 3 Sn coils. These magnets provide an ideal platform for XMCD and other polarity switching applications. Here we present data for the standard 7 Tesla solenoid version. A continuous sweep rate of 100 sweeps/hour has been achieved between +/-7 Tesla. At +/-4T the same coil can be ramped continuously at full speed without pause giving up to 670 sweeps/hour. The compact design uses 2x Gifford-McMahon cryocoolers, each providing 1.5W cooling power at 4.2K. Alternative designs are available including split-pair magnets with 4-way access and UHV bore. Key Features Non-stop operation: Continuous sweeping between +/-7 Tesla Fast cooldown: Fully operational within 5 hours of switch on Fast ramping: Ramp rates up to 1.5 T/s. Proven performance of 100 sweeps per hour at +/-7T Fast recovery: In the event of quench, fully operational again within 15 minutes Fast warm up: Overnight warm-up with in-built heaters Power saving mode: Remains operational with one coldhead switched off In-built thermal buffer: Limits peak temperatures during ramping CRYOGEN-FREE 3D VECTOR MAGNET World s first 9T/5T/1T Cryogen Free 3D Vector Magnet with Dilution Refrigerator (DR) and temperature down to 10 mk Vector magnet and Dilution Refrigerator (DR) in shared vacuum space Large 3D Vector magnet with 50 mm magnet bore and 30 mm sample space in DR 4 Tesla rotatable magnetic field over 4π solid angle Top loading Dilution Refrigerator for temperatures down to 10 mk Separate Pulse Tube Cryocoolers for magnet and DR

4 WORLD LEADERS IN CRYOGEN-FREE TECHNOLOGY... CRYOGEN-FREE MEASUREMENT SYSTEMS 5 TO 25 TESLA Cryogen-free super-conducting magnets to 25 Tesla No liquid helium needed Variable temperature sample space (1.6 K K) Highly stable magnetic field High power Pulse Tube cryocoolers with low vibration No maintenance for 3 1/2 years continuous use Cryogen-Free 16 Tesla VSM, 50 mm VTI, with option for Dilution Refrigerator Insert for temperatures down to 50 mk Cryogen-Free 5 Tesla Mini Vibrating Sample Magnetometer, with AC Susceptibility and high temperature facility to 700 K Temperature Ranges High Temperature Insert with temperatures up to 1000 K He-3 Insert with temperatures down to 300 mk and 24 hours hold time Ultra low temperatures down to 50 mk with shielded coil in a cryogen-free Dilution Refrigerator Measurement Options Vibrating Sample Magnetometer (VSM) for measurements of DC magnetic moment with sensitivity of 10-6 EMU AC Susceptibility probe AC Calorimeter to measure Specific Heat and Thermal Conductivity Resistivity and Hall effect probe with option for sample rotation in field MFM/AFM and Pressure Cell options CRYOGEN-FREE SQUID MAGNETOMETER High homogeneity cryogen-free 7 Tesla magnet Completely dry system requiring no liquid helium Low maintenance Pulse Tube cryocooler AC and DC measurements with 10-8 EMU sensitivity Smooth transition across 4.2 K He-3 Insert for temperatures down to 300 mk High temperature option Flexible open LabVIEW software Real-time data access during measurement MilliTesla field resolution and setting He-3 probe for temperatures down to 300 mk

5 ULTRA HIGH VACUUM (UHV) CRYOSTATS UHV 2-Axis Split Pair Magnet 9 T along main axis 4 T along secondary axis 8 T/min ramp rate on main coil 4 way UHV access to sample Vacuum sample change Electrically isolated sample mount Cryocoolers for magnet and DR 17 T UHV Magnet Highest magnetic field currently operating on any X-Ray beam line Ramp rate 2 T/min over +17 T to 17 T and multiple cycles Vacuum bore Low-loss Helium Cryostat Cryogen-Free 6 T Split Pair Magnet Separate UHV sample space External magnet alignment Adjustable magnetic tie rods Internal iron pole piece Bakeable to 100 C Cryogen-free VTI for temperatures down to 1.6 K He-3 insert for temperatures down to 300 mk LabVIEW software Polar or Cartesian control of field vector Cryogenic Limited Units 30 Acton Park Industrial Estate, Acton, London W3 7QE, United Kingdom Tel: +44 (0) Fax: +44 (0) sales@cryogenic.co.uk

6 World s first 18 Tesla Cryogen Free VSM Measurement system with sample rotating He-3 insert Rotating He-3 refrigerator probe for use in Cryogen Free VTI High field magnet system for VSM, Resistivity, AC Susceptibility, Specific heat, and Thermal transport measurements. Variable Temperature Sample Space ( K) Temperatures down to 300 mk High power pulse tube cryocoolers with low vibration CRYOGEN-FREE MEASUREMENT SYSTEMS 5 TO 25 TESLA Cryogen-free super-conducting magnets to 25 Tesla No liquid helium needed Variable temperature sample space (1.6 K K) Cryogen-Free 16 Tesla VSM, 50 mm VTI, with option for Dilution Refrigerator Insert for temperatures down to 50 mk Highly stable magnetic field High Temperature Insert with temperatures up to 1000 K He-3 Insert with temperatures down to 300 mk Temperatures down to 50 mk with a cryogen-free Dilution Refrigerator High power Pulse Tube cryocoolers with low vibration No maintenance for 3 1/2 years continuous use Cryogen-Free 5 Tesla Mini Vibrating Sample Magnetometer, with AC Susceptibility and high temperature facility to 1000 K Measurement Options Vibrating Sample Magnetometer (VSM) for measurements of DC magnetic moment with sensitivity of 10-6 EMU AC Susceptibility probe AC Calorimeter to measure Specific Heat and Thermal Conductivity Resistivity and Hall effect probe with option for sample rotation in field MFM/AFM and Pressure Cell options Cryogenic Limited Units 30 Acton Park Industrial Estate, Acton, London W3 7QE, United Kingdom Tel: +44 (0) Fax: +44 (0) sales@cryogenic.co.uk

7 CRYOCOOLED CRYOSTAT FOR USE WITH CCC/JOSEPHSON ARRAY INSERTS Re-condensing liquid helium CCC cryostat with 3 inch (76.2 mm) bore access Suitable for both CCC and Josephson Array Insert Fitted with 1 /2 Watt PT405 Pulse tube cryocooler Pressure stabilised helium reservoir to minimise instability in CCC operation Low vibration and low maintenance (every three years) Special built-in facility for liquefying helium gas from room temperature - No cryogens required for start-up or operation Optimised radiation shield to reduce external heat loads to a minimum Open LabVIEW software. Cryogenic Limited, Unit 30, Acton Park Industrial Estate, The Vale, Acton, London, W3 7QE. United Kingdom. Tel: +44 (0) Fax: +44 (0) sales@cryogenic.co.uk