[Eng-div] Accelerator Seminar: 4/2/15 - Xiangyun Chang

[Gayle Sundeen]

From: "Audrey Nichols" <anichols at jlab.org> 

Reminder! 


From: "Audrey Barron" <anichols at jlab.org> 
To: "acc staff" <acc_staff at jlab.org> 
Cc: "Xiangyun Chang" <xychang6666 at gmail.com> 
Sent: Friday, March 27, 2015 12:27:02 PM 
Subject: [Accelerator_staff] Accelerator Seminar: 4/2/15 - Xiangyun Chang 

ACCELERATOR SEMINAR 

"A High-Peak and High-Average Current, Low Emittance, Long Lifetime Electron Source for ERL Applications" 

Xiangyun Chang 
Far-Tech 

This research is to develop a replacement for the standard photocathode/laser source with a phase controlled thermionic source that eliminates the electron back-bombardment and the poor quality beam associated with the normal use of thermionic sources in RF guns. The source would only emit electrons during the peak portion of the RF electric field. The source would CW, filling every RF bucket in the gun section, and capable of high peak and average current, low emittance beam. As an example, this technique is applied in generation of JLab's magnetized beam for ion beam electron cooling. Some preliminary proof of principle experiment results are presented. 

Thursday, April 2, 2015 
11:00 a.m. 
CEBAF Center, Room F113 


Seminar archives are found here: http://wwwold.jlab.org/accel/seminars.html 


------ 
Audrey N. Barron 
Administrative Assistant 
Center for Advanced Studies of Accelerators 
Jefferson Lab 
757-269-7327 
anichols at jlab.org / www.jlab.org 



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https://mailman.jlab.org/mailman/listinfo/accelerator_staff 
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