First Announcement

We are pleased to invite you to participate in a joint machine-detector study group devoted to the topic of IP beam instrumentation for the Next Linear Collider. The principle goal of this study is to move beyond broad conceptual ideas and begin to specify in detail the beam instrumentation and associated infrastructure necessary to realize the full physics potential of a 500 GeV linear collider. The first meeting of this study group will be held at SLAC on June 26th.

One of the distinct advantages of a high energy e+e- linear collider is the well defined initial state in the collision process. This advantage can only be realized, however, if there is adequate beam instrumentation available to measure the beam properties at the interaction point.

The instrumentation topics to be addressed by this study include beam polarization, beam energy scale, luminosity spectrum, and control of IP parameters for luminosity optimization. Beyond discussing the target precision and prospective technologies for this instrumentation, this study will aim to develop detailed beam line designs, propose concrete operational strategies, and identify specific topics for further research.

The format of the first meeting at SLAC will be designed to promote discussion and brainstorming, with short introductory talks given in each topical area followed by a round table discussion directed by a list of questions to be prepared in advance. It is expected that this meeting will be the first in a series which will continue until the primary goal of a more detailed plan for the IP instrumentation is achieved. To limit the scope of topics considered at this initial meeting, we will focus on the physics needs for high energy operations of the 500 GeV NLC design.

The timing of the first meeting, which immediately precedes the Santa Cruz meeting, has been chosen to encourage the participation of all interested parties. While the NLC design will be principally used to make the discussion concrete, most of the topics to be addressed are universal beyond specific machine designs, and we warmly welcome participation from the Tesla and JLC communities. Non-experts and people interested in potential new research opportunities are also strongly encouraged to attend.

More detailed information about the study and the first meeting will be available at the IP BI Study web page:

-David Cinabro
-Eric Torrence
-Mike Woods

Updated: April 16th, 2002