Personalized information clients: short answers to simple questions about “my library” services

Recent advancements in technology have inspired libraries to develop creatively customized services, or personalized information clients, allowing users to organize and manage Web sites for their personal interests and needs. One example of this customer orientation is the “my library” service, described in this series of questions and answers

The development of the time bridge astronomical photometer

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Virtual Worlds & Virtual Collaboration

Contributing institution: Rutgers Universit

Spallation Neutron Source Beam Current Monitor Electronics

The Spallation Neutron Source (SNS) to be constructed at ORNL is a collaboration of six laboratories. Beam current monitors for SNS will be used to monitor H-minus and H-plus beams ranging from the 15 mA (tune-up in the Front End and Linac) to over 60 A fully accumulated in the Ring. The time structure of the beams to be measured range from 645 nsec ''mini'' bunches, at the 1.05 MHz ring revolution rate, to an overall 1 mS long macro pulse. Beam current monitors (BCMs) for SNS have requirements depending upon their location within the system. The development of a general approach to satisfy requirements of various locations with common components is a major design objective. This paper will describe the development of the beam current monitors and electronics