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Message ID: 3928     Entry time: Mon Nov 15 22:24:28 2010
Author: Suresh 
Type: Update 
Category: SUS 
Subject: Selection of Magnets 

I have selected a set of 16 magnets which have a B field between 900 to 950 Gauss (5% variation) when measured in the following fashion.

I took a Petri-dish, of the type which we usually use for mixing the glue, and I placed a magnet on its end.  I then brought the tip of the Hall-probe into contact with the Petri-dish from the opposite side and adjusted the location (and orientation) of the probe to maximise the reading on the Gauss meter.

The distribution of magnets observed is listed below

 

Range of B Field (Gauss) # of Magnets
800-849 2
850-899 6
900-950
16

 

 

 

 

 

The set of sixteen has been have been placed inside two test tubes and left on the optical bench (right-side)  in the clean room.

 

 

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