<html><body><div style="color: rgb(0, 0, 0); font-family: arial,helvetica,sans-serif; font-size: 12pt;"><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Audrey Nichols" <anichols@jlab.org><br></div><div><br></div><div data-marker="__QUOTED_TEXT__"><div style="color: rgb(0, 0, 0); font-family: tahoma,new york,times,serif; font-size: 12pt;" data-mce-style="font-family: tahoma,new york,times,serif; font-size: 12pt; color: #000000;"><div>Reminder!<br></div><br><hr id="zwchr"><div><b>From: </b>"Audrey Barron" <anichols@jlab.org><br><b>To: </b>"acc staff" <acc_staff@jlab.org><br><b>Cc: </b>"Xiangyun Chang" <xychang6666@gmail.com><br><b>Sent: </b>Friday, March 27, 2015 12:27:02 PM<br><b>Subject: </b>[Accelerator_staff] Accelerator Seminar: 4/2/15 - Xiangyun Chang<br></div><br><div><div style="color: rgb(0, 0, 0); font-family: tahoma,new york,times,serif; font-size: 12pt;" data-mce-style="font-family: tahoma,new york,times,serif; font-size: 12pt; color: #000000;"><div>ACCELERATOR SEMINAR <br></div><br><div>"A High-Peak and High-Average Current, Low Emittance, Long Lifetime Electron Source for ERL Applications"<br></div><br><div>Xiangyun Chang<br></div><div>Far-Tech<br></div><br><div>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.<br></div><div><br style="color: black; font-family: Arial; font-size: 14pt; language: en-US;" data-mce-style="font-size: 14.0pt; font-family: Arial; color: black; language: en-US;"></div><div>Thursday, April 2, 2015<br></div><div>11:00 a.m.<br></div><div>CEBAF Center, Room F113<br></div><br><br><div><span class="ZmSearchResult" id="DWT1557" data-mce-style="">Seminar</span> archives are found here: <span class="Object" id="OBJ_PREFIX_DWT1558_com_zimbra_url" data-mce-style=""><span class="Object" id="OBJ_PREFIX_DWT2318_com_zimbra_url" data-mce-style=""><span class="Object" id="OBJ_PREFIX_DWT1106_com_zimbra_url" data-mce-style=""><span class="Object" id="OBJ_PREFIX_DWT2067_com_zimbra_url" data-mce-style=""><span class="Object" id="OBJ_PREFIX_DWT2816_com_zimbra_url"><span class="Object" id="OBJ_PREFIX_DWT2823_com_zimbra_url"><a href="http://wwwold.jlab.org/accel/seminars.html" target="_blank" data-mce-style="" data-mce-href="http://wwwold.jlab.org/accel/seminars.html">http://wwwold.jlab.org/accel/seminars.html</a></span></span></span></span></span></span><br></div><div><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object"><span class="Object"><br></span></span></span></span></span></span></div><div><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object" data-mce-style=""><span class="Object"><span class="Object"><br></span></span></span></span></span></span></div><div><div>------<br><b><span style="font-size: small;" data-mce-style="font-size: small;">Audrey N. Barron</span></b><br><span style="font-size: small;" data-mce-style="font-size: small;">Administrative Assistant</span><br><span style="font-size: small;" data-mce-style="font-size: small;">Center for Advanced Studies of Accelerators</span><br><span style="font-size: small;" data-mce-style="font-size: small;">Jefferson Lab</span><br><span style="font-size: small;" data-mce-style="font-size: small;">757-269-7327</span><br><span style="font-size: small;" data-mce-style="font-size: small;"><a href='http://<a href="mailto:anichols@jlab.org">anichols@jlab.org</a>Email Me</a> ' target="_blank" data-mce-href='http://<a href="mailto:anichols@jlab.org">anichols@jlab.org</a>Email Me</a> '>anichols@jlab.org</a></span> / <span style="font-size: small;" data-mce-style="font-size: small;"><a href="http://www.jlab.org" target="_blank" data-mce-href="http://www.jlab.org">www.jlab.org</a></span> <br><br><img style="border: 0px currentColor; border-image: none;" src="cid:f73fb9be3bfb73e47ee03ee66934d0838b0facd8@zimbra" data-mce-style="border: 0px none;" data-mce-src="cid:f73fb9be3bfb73e47ee03ee66934d0838b0facd8@zimbra"><br></div></div></div><br>_______________________________________________<br>Accelerator_staff mailing list<br>Accelerator_staff@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/accelerator_staff<br></div></div><br>_______________________________________________<br>Accelerator_staff mailing list<br>Accelerator_staff@jlab.org<br>https://mailman.jlab.org/mailman/listinfo/accelerator_staff<br></div></div></body></html>