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Message ID: 468     Entry time: Wed May 23 17:11:57 2012
Author: Keerthi Jayamanna 
Type:  
Category:  
Subject: Changed beam to 12C++ beam 

Removed titanium from the back plate and clean the source.

But left the PE titanium insert since Bob and Marco badly want the 12C++ beam from the source fast.

Background 12C++ was only 400pA so installed a small canister with CO in it with bellow atm. pressure.

Now source is running with ~2nA current.

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