Magnetic probe station DXTPS4V

cryogenicvacuumcryomagnetic

Overview

The DXTPS4V Cryogenic Probe Station integrates ultra-low temperature control (4.2 K–350 K) with a superconducting solenoid (±2.5 T) in a cryogen-free platform for electrical and magnetic characterization of materials and devices. It is designed for advanced research in condensed matter physics, materials science and quantum device testing. Key features include a stainless-steel vacuum chamber with viewport, multi-channel temperature control, triaxial probe arms and a high-stability bipolar magnet power supply.

Included components

• 1) Cryogenic Probe Station — Qty: 1: cryogen-free 2″ probe station with stainless steel vacuum chamber, removable top lid (viewport ≥ 63 mm); six probe ports; one vacuum gauge port; gas port with fast vent; Buna‑N O‑ring seals; vacuum rating better than 1×10⁻3 Torr at room temperature with proper pumping.
• 2) Temperature Control and Monitoring — Qty: 1: CTC100 multi-channel controller with two automated PID loops; independent control of sample chuck and radiation shield; stability < ±50 mK below 100 K and < ±100 mK elsewhere; sensors/heaters on sample stage, magnet, radiation screen and secondary platform; LabVIEW drivers included.
• 3) Digital Microscope — Qty: 1: 7:1 manual zoom lens, camera tube, 1× lower lens, megapixel color CCD USB2.0 camera, coaxial illumination; resolution ≈ 4 µm.
• 4) Sample Holder — Qty: 1: grounded 2″ gold‑plated OFHC copper sample stage, accepts samples up to 2″ diameter.
• 5) Triaxial DC XYZ Manipulated Probe Arms — Qty: 4 sets (6 triaxial DC arms total): X 50 mm, Y 25 mm, Z 25 mm; 40 TPI resolution (~3 mm); bellows for full motion; triaxial cabling and feedthroughs; probes thermally anchored with OFC braids.
• 6) Lab Chiller — Qty: 1: 15 kW chiller @ 25 °C; nominal cooling 8 kW @ 25 °C; start/stop temperature control; accuracy ±1 °C; control range 5–35 °C; 220 V 50 Hz; includes filter, alarms and standard tubing/cables.
• 7) Molecular Pump Group — Qty: 1: includes molecular pump group and front-stage dry vacuum pump MVP 015; pre-stage 3 m³/h (50 Hz); extraction N2 67 L/s; molecular pump flange optional DN63/40; extreme vacuum < 1×10⁻7 hPa.
• 8) Superconducting Magnet — Qty: 1: superconducting solenoid, central field ±2.5 T; uniformity 0.5% over 10 mm sphere / 1% over 20 mm sphere; field direction perpendicular to sample; max current 100 A; calibrated current–field relation.
• 9) Magnet Power Supply — Qty: 1: true bipolar DC power supply, -100 A to +100 A, ±5 V output, stability < 50 ppm/h; four-quadrant operation; RS‑232C and GPIB communication; LabVIEW control subroutine provided.
• 10) Low Temperature Probe — Qty: 10: guarded probes with gold‑plated guard tied to coax outer shield (three coax connectors); enables leakage < 100 fA; needle tips options: 1 µm, 5 µm, 10 µm.

Technical specifications

• Temperature range: 4.2 K – 350 K.
• Vacuum chamber: stainless steel; removable top lid with ≥ 63 mm viewport.
• Vacuum rating: better than 1×10⁻3 Torr at room temperature with appropriate pumping.
• Probe ports: six ports; one vacuum gauge port; Buna‑N O‑ring seals; gas port with vent for fast venting.
• Sample stage: grounded 2″ gold‑plated OFHC copper, supports samples up to 2″ diameter.
• Temperature control: CTC100 controller with two PID loops; independent chuck and shield control; stability < ±50 mK under 100 K, < ±100 mK otherwise; multiple sensors/heaters and 100 W heaters on stages/magnets/shields; LabVIEW drivers.
• Microscope: 7:1 manual zoom, CCD USB2.0 camera, coaxial illumination, resolution ~4 µm.
• Probe arms: triaxial DC XYZ arms (6 arms total); X 50 mm, Y 25 mm, Z 25 mm; 40 TPI (~3 mm) resolution; bellows and thermal anchoring via OFC braids.
• Chiller: 15 kW @ 25 °C (chiller), nominal 8 kW @ 25 °C; accuracy ±1 °C; range 5–35 °C; 220 V 50 Hz; includes filter, alarms and tubing.
• Molecular pump group: front-stage MVP 015; pre-stage 3 m³/h (50 Hz); extraction N2 67 L/s; extreme vacuum < 1×10⁻7 hPa; weight ~17 kg.
• Superconducting magnet: solenoid, ±2.5 T max; uniformity 0.5% (10 mm) / 1% (20 mm); max current 100 A.
• Magnet power supply: true bipolar DC, -100 A to +100 A, ±5 V, stability < 50 ppm/h; RS‑232C and GPIB; LabVIEW subroutine.
• Low-temperature probing: guard protection, three coaxial connectors, leakage < 100 fA; needle tips 1 µm / 5 µm / 10 µm.

Applications

• Electrical and magnetic characterization of thin films, heterostructures and devices.
• Quantum device testing (qubits, SNSPDs, single-electron devices).
• Condensed matter and materials science research under controlled temperature and magnetic field.

Interfaces & software

• LabVIEW drivers and control subroutines provided for temperature and magnet control.
• Magnet power supply interfaces: RS‑232C and GPIB; host control and data logging supported.
• Standard power and coolant connections; chiller and pump monitoring with alarms.