The discussion revolves around the effects of the permanent magnetic field produced by Penning gauges on the surrounding environment of a vacuum chamber, particularly in relation to specific experiments involving silicon chips, optical fibers, and quantum dots. Participants explore the implications of using Penning gauges compared to Bayard-Alpert gauges, focusing on potential interference with experimental outcomes.
Participants generally agree that the lack of clarity regarding the experiment's objectives and methodology complicates the discussion. There are competing views on the relevance of the magnetic field effects, with some participants questioning its significance while others acknowledge the potential for interference.
The discussion highlights limitations in understanding the specific experimental setup and objectives, which may affect the assessment of the magnetic field's impact. There are unresolved questions regarding the efficiency of magnetic shielding and the nature of the stray fields in relation to the experiment.
Well, what is your experiment?Remi said: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 said:Well, what is your experiment?
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"?Remi said:It is an experiement with silicon chips and optical fibers, and at least quantum dots.
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.Chronos said: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.