Luminosity Measurement at PEP-N

TL;DR

This paper discusses the development of luminosity measurement methods for the PEP-N experiment, including a real-time monitor based on bremsstrahlung and an offline method using Bhabha scattering to achieve high accuracy.

Contribution

It introduces the PEP-2 luminosity monitor with novel techniques for online and offline luminosity determination at PEP-N.

Findings

Proposed a fast online luminosity monitor using bremsstrahlung.

Developed an offline method utilizing Bhabha scattering for precise luminosity measurement.

Achieved an accuracy goal of 0.01 per pb$^{-1}$ for integrated luminosity.

Abstract

The PEP-N experiment requires a fast on-line luminosity monitor of modest accuracy plus an off-line method of determining integrated luminosity with accuracy of 0.01 for each pb$^{-1}$. We propose the PEP-2 monitor, based on observing single bremsstrahlung at zero degrees to the positron direction at collision for the former and the use of Bhabha scatters at polar angles $>$.03 radians for the latter requirement.