PEP I: New Leader

PEP I&C Group and PEP Theory Groupt

New Petri Net Programming Features in PEP ?

We present two new facilities of the high level Petri net editor of the PEP tool. The latest version extends the class of supported Petri nets by a time extension of M-nets. Additionally it features a new operator for asynchronous communication complementing the synchronization operator. We present an example of an ARQ protocol with enhanced acknowledgment handling. form.

New Fast Dither System for Pep-ii*

The PEP-II B-Factory uses multiple feedback systems to stabilize the orbits of its stored beams and to optimize their performance in collision [1]. This paper describes an upgrade to the feedback system responsible for optimizing the overlap of colliding beams at the interaction point (IP). The effort was motivated by a desire to shorten the response time of the feedback, particularly in the co...

Detector Solenoid Compensation in the PEP - I 1 B - Factory *

The PEP-I1 experimental detector includes a strong 1.5 T solenoid field in the interaction region (IR). With the fringe fields, the solenoid extends over a range of 6 m. Additional complications are that 1) it is displaced longitudinally from the interaction point (IP) by about 40 cm, 2) neither beam is parallel to the solenoid axis, and 3) the solenoid overlaps a dipole and a quadrupole on eit...

Prelimlnary Design Consjderatigns for the Stage I Pep Latticet

Description and Summary A general description of the proposed PEP e+e-stora e ring may be found elsewhere1s2 and in these Proceedings. 75 gmax = 557r W/e In the present paper, we discuss the lattice and its operating 'characteristics in more detail, show how the design luminos-ity and other criteria may be met and outline the limits of the operative regions of the beam parameters in several mod...