Magnet Options

A Persistent Mode Switch is an option for increasing the stability of superconducting magnets over long periods of time. With persistent mode, the magnet’s external power supply can be turned off during operation and the magnetic field is preserved by a persistent current.

The stability of the magnetic field with persistent mode is better compared to using the external power supply. The Persistent Mode Switch is installed on the magnet and becomes an integral part of it. The Persistent Mode Switch is available for all magnets.

The Persistent Mode Switch comprises a superconducting wire connected across the input terminals of the magnet, and an integral heater. The heater drives the wire into a resistive state, which allows the magnet to be energized before engaging the persistent mode by turning off the heater. Once the wire cools down, it becomes superconductive, and the current continues to circulate through the magnet and the Persistent Mode Switch.

For magnet power supplies, a High-Stability Option is available. This option improves the accuracy of the power supply, creating a more stable magnetic field.

In systems with an integrated magnet, it is possible to decrease the cooldown time by replacing the magnet with a 4K Shield Magnet Dummy.

Additionally, to have a bigger sample space while using the system without a magnet, an extra still shield without a tail is needed.