Pulse selection control for the IR FEL photocathode drive laser

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Description

The method for current control of a photocathode source is described. This system allows for full remote control of a photocathode drive laser for resulting electron beam currents ranging from less than one microamp to a full current of five milliamps. All current modes are obtained by gating the drive laser with a series of electro-optical cells. The system remotely generates this control signal by assuming a mode of operation with the following properties selectable: Current mode as continuous or gated, micropulse density, macropulse gate width from single shot to 1ms duration, macropulse synchronization to A/C line voltage (60 Hz) ... continued below

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4 pages

Creation Information

Jordan, K.; Evans, R. & Garza, O. August 1, 1997.

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Description

The method for current control of a photocathode source is described. This system allows for full remote control of a photocathode drive laser for resulting electron beam currents ranging from less than one microamp to a full current of five milliamps. All current modes are obtained by gating the drive laser with a series of electro-optical cells. The system remotely generates this control signal by assuming a mode of operation with the following properties selectable: Current mode as continuous or gated, micropulse density, macropulse gate width from single shot to 1ms duration, macropulse synchronization to A/C line voltage (60 Hz) or an external trigger, 60 Hz phase and slewing through 60 Hz when applicable. All selections are derived from programmable logic devices operating from a master-oscillator resulting in a discrete, phase stable, pulse control for the drive laser.

Physical Description

4 pages

Notes

OSTI as DE97008133

Source

  • 17. IEEE particle accelerator conference, Vancouver, British Columbia (CA), 05/12/1997--05/16/1997; Other Information: Supercedes report DE97008133; PBD: 1 Aug 1997

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  • Other: DE97008133
  • Report No.: DOE/ER/40150--1161
  • Report No.: JLAB-ACE--97-03
  • Report No.: CONF-970503--181
  • Report No.: ON:DE97008133
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 510569
  • Archival Resource Key: ark:/67531/metadc698863

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  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 17, 2017, 6:18 p.m.

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Jordan, K.; Evans, R. & Garza, O. Pulse selection control for the IR FEL photocathode drive laser, article, August 1, 1997; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc698863/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.