A foil stripper and terminal steering assembly for an FN tandem

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6276638

Weitkamp, W. G.

We recently installed a new foil stripper mechanism and steerer assembly in our FN tandem terminal. The project had the following goals: To significantly increase the number of foils in the tandem. We formerly had only a 38 foil capacity. Now that the new superconducting booster is running, demand for foils has increased drastically. To add horizontal steering plates to the vertical steering plates in the terminal. With conventional HVEC inclined field beam tubes, the position of the beam at the exit of the tandem is sensitive to the variation in value of the column resistors. Minor beam tube misalignments can also cause the beam to come out displaced horizontally by an annoying amount. To retain the gas stripper tube. We occasionally find it convenient to use gas stripping for low energy heavy ion beams and for ions for which the foil consumption rate is excessive. To electrically insulate all terminal components so the terminal ripple remover will continue to operate. The terminal ripple remover, which is designed to reduce beam energy fluctuations, places a rapidly varying 2-9 kV bias on the stripper foil or stripper gas canal in response to an energy correction signal derived from the image slits. The energy correction signal is transmitted optically to the terminal. 1 ref., 2 figs.

• Research Organization: Washington Univ., Seattle (USA). Nuclear Physics Lab.
• DOE Contract Number: AC06-81ER40048
• OSTI ID: 6276638
• Report Number(s): DOE/ER/40048-219-L8; CONF-8810242-9; ON: DE89008209
• Country of Publication: United States
• Language: English

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