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Accelerator Seminars


Accelerator Seminar Committee:
  Chair: Vasiliy Morozov
    Members: Steve Benson, Gianluigi Ciovati, and Kevin Jordan


 Accelerator Seminars will be scheduled weekly on Thursday's from 11:00 a.m. - 12:00 p.m.
If you would like to schedule a seminar, please contact Vasiliy Morozov for approval.

DATE, TIME: September 1, 2017

LOCATION: CEBAF Center, Room L102

TITLE: Using Science to Protect America's Borders

SPEAKER: Kathy McCormick, U.S. Customs and Border Protection, Department of Homeland Security

ABSTRACT: An overview of some of the scientific tools that U.S. Customs and Border Protection (CBP) utilizes to perform its mission of safeguarding the borders of the United States will be presented. The talk will include a short history of CBP,  its scientific division laboratories and scientific services, and discussion of some of the large programs that CBP runs, including the radiation portal monitor program and the non-intrusive inspection program. These programs employ radiation detection equipment and x- and gamma-ray inspection equipment to interrogate the contents of commerce entering the United States without opening the conveyance.

 

DATE, TIME: September 19, 2017

LOCATION: CEBAF Center, Room L102

TITLE: UH-FLUX Project: High Current ERL for Research and Industrial Applications

SPEAKER:Ivan Konoplev, University of Oxford

ABSTRACT: The next generation light sources for research and industry are to be compact, highly efficient, have high repetition rates and high-brilliance radiation pulses. To generate high-power, high brilliance beam either in THz or X-ray ranges, a high charge electron beam is required. One of the candidates capable to satisfy all these requirements are LINAC driven light sources which efficiency can be significantly improved by adding energy recovery stage. However, adding the energy recovery stage, while increasing the beam charge and repetition rate, leads to the appearance of beam break-up (BBU) instabilities. This instability arise from use of the same cavity or strongly coupled cavities to achieve energy recovery. Indeed in this case the positive feedback between the transverse momentum imparted by the high order modes (HOMs) and the HOMs amplitude is readily established. To solve the problem, design the high current ERL and build novel compact sources of bright  THz and EUV radiation the UH-FLUX has been established. Here the first steps of the project and  the most recent results observed will be discussed. The conceptual design of the single turn, asymmetric energy recovery LINAC (AERL) will be shown.  We expect that using such a RF cavity design the regenerative BBU instability start current can be significantly increased allowing > 1A average electron beam current to be driven through the system.

 

Seminar Archives: [2017]  [2016]  [2015]  [2014]  [2013]  [2012]  [2011]  [2010]  [2009]  [2008]  [2007]  [2006]  [2005]  [2004]  [2003]  [2002]  [2001]