Development of beam position monitors for heavy ion recirculators
Work is underway at the Lawrence Livermore National Laboratory to design and build a small-scale, heavy ion recirculating induction accelerator. An essential part of this design work is the development of small non-intercepting diagnostics to measure beam current and position. This paper describes some of this work, with particular emphasis on the development of a small capacitive probe beam position monitor to resolve beam position to the 100 /spl mu/m level in a 6 cm diameter beam pipe. Initial measured results with an 80 keV potassium ion beam are presented.
Recent Progress in the Development of a Circular Ion Induction Accelerator for Space Charge Dominated Beams at LLNL
The Heavy Ion Fusion Group at Lawrence Livermore National Laboratory has for several years been developing the world�s first circular ion induction accelerator. This machine has recently been extended to 90 degrees, or 10 half-lattice periods (HLP) with full beam transport. In addition, induction cores have been installed on five of the HLP�s, each with an independent arbitrary waveform pulser. An arbitrary waveform pulser for the bending electrostatic dipoles has also been enabled. Together, they have allowed the first attempts at coordinated bending and acceleration of the beam. The results of these first attempts will be reported on in the paper by examining the output of various diagnostic devices, such as the capacitive Beam Probes (C-probes), slit scanners, and the Gated Beam Imager(GBI).
“Family” Support for Family Violence: Exploring Community Support Systems for Lesbian and Bisexual Women Who Have Experienced Abuse
ABSTRACT “Family” is a euphemistic term that lesbian, gay, bisexual, and transgender (LGBT) people use among ourselves to designate membership in lesbian, gay, bisexual, and transgender communities. Ironically, this “family” may be the most sought, yet least successful, support for dealing with the intimate partner violence that occurs within LGBT families. This study of 11 lesbian and bisexual women's experiences seeking support revealed several tiers of unmet needs within the LGBT community. They rarely used services in the general community, although these services are often the focus of both criticism and efforts to build support systems for LGBT victim/survivors. A model presents the different stages and potential sources of support.