Vacuum System Design: Penning Gauge Effects

AI Thread Summary
The discussion centers on the effects of the permanent magnetic field from Penning gauges on vacuum chamber experiments, particularly those involving silicon chips, optical fibers, and quantum dots. Participants express concern that the magnetic field may interfere with the experimental outcomes, but the specific nature of the experiment remains unclear. Questions arise regarding the efficiency of magnetic shielding provided by suppliers to mitigate these effects. The relevance of the magnetic field to the experiment is debated, with some contributors suggesting that without a clear understanding of the experimental goals, it is difficult to assess potential impacts. Overall, the conversation highlights the need for clarity on experimental objectives to evaluate the influence of Penning gauge magnetic fields effectively.
Remi
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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.
 
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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.
Well, what is your experiment?
 
Gokul43201 said:
Well, what is your experiment?

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