Connecting to PPMS Dynacool by Quantum Design in Python

Instrument Card

Quantum Design’s DynaCool™ PPMS® performs electrical, thermal and magnetic measurements while controlling the samples temperature and magnetic environment.The system uses a single two-stage pulse tube cooler to cool both the superconducting magnet and provide temperature control below 10K, resulting in a low vibration environment for sample measurements. At low temperatures a small amount of Helium-4 is condensed and used to cool the sample while the magnet is cooled through solid contact to a 4 K plate.

Device Specification: here

Manufacturer card: QUANTUM DESIGN

Quantum Design manufactures automated temperature and magnetic field testing platforms.

• Headquarters: San Diego, California
• Yearly Revenue (millions, USD): 41.5
• Vendor Website: here

Connect to the PPMS Dynacool in Python

Read our guide for turning Python scripts into Flojoy nodes.

Flojoy

PROTOCOLS > SCPI

📄 IDN

Query a device's identity through the universal *IDN? SCPI command.

📄 MEASURE VOLTAGE

Query an instrument's measured output voltage, such as a DMM or power supply.

📄 SCPI WRITE

Write a SCPI command to a connected bench-top instrument and return the result.

QCodes

Here is an example Python script that uses Qcodes to connect to a PPMS DynaCool Spectrometer:

import qcodes as qc
from qcodes.instrument_drivers.QuantumDesign.DynaCoolPPMS import DynaCool

# Connect to the DynaCool instrument
dynacool = DynaCool('dynacool', 'TCPIP0::127.0.0.1::5000::SOCKET')

# Print the instrument ID
print(dynacool.get_idn())

# Set the temperature setpoint to 10 K
dynacool.temperature_setpoint(10)

# Ramp the field to 1 T in blocking mode
dynacool.field_target(1)
dynacool.ramp(mode='blocking')

# Get the measured field
field = dynacool.field_measured()
print(f"Measured field: {field} T")

# Close the connection to the instrument
dynacool.close()

This script connects to the DynaCool instrument using the IP address and port specified in the address argument of the DynaCool constructor. It then sets the temperature setpoint to 10 K and ramps the field to 1 T in blocking mode. Finally, it retrieves the measured field value and prints it. The connection to the instrument is closed at the end of the script using the close() method.