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Message ID: 415     Entry time: Wed Jul 20 01:37:46 2011
Author: Keerthi Jayamanna 
Type:  
Category:  
Subject: Al beam development: 

 

Supernanogan is tested for Al+6 beam production.
A 8nA of mass 4.5 is seen. Background pressure is not good enough to
produce more Al+6. Attempt to increase Al beam current with higher sputtering
voltages resulted in fast destruction of the Al sample.
Decided to move to the microwave ion source.
Clean all the Mg and installed Al liners and the Al PE electrode.

Source is now pumping down. Damien, Please start the source as soon as you arive. Try to keep PE current below 500mA. Optimum is ~200mA

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