Vacuum system design

Remi

What is the efect of the permanent magnetic field in a Penning gauge on the outside environment (meaning my vacuum chamber)? Penning gauges seem to show several advantages compared to Bayard-Alpert ones (strongness, contamination...) but this magnetic field may spoil my experiment.

Gokul43201

Well, what is your experiment?

Remi

It is an experiement with silicon chips and optical fibers, and at least quantum dots. Is the "magnetic shield" provided by some suppliers efficient?

Gokul43201

That conveys absolutely nothing about the actual experiment, and it is impossible to determine if tiny stray fields will hurt your experiment if we don't know what the experiment is trying to measure. And what do you mean by "at least quantum dots"?

Chronos

I second Gokul's motion, the objective and methodology is unclear. The permanent magnetic field part confused me. I don't perceive that as being relevant.

Gokul43201

THe OP is concerned about the magnetic fields from his/her Penning Gauges (this is an ionization type vacuum gauge that uses a magnetic field to increases the path length of the ions), and I think, wants to know if his/her experiment in the vacuum chamber will be affected by the stray field.