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Annual Dose and Radiation Metrics for RHIC II Operation

This document provides detailed metrics related to the annual radiation doses for the RHIC II facility. The operational parameters include a luminosity of 7 x 10^27 1/(cm².sec) with a 25-week yearly operation and 60% uptime. Radiation doses are measured in kRad at different pions and UPC electron rates, with specific data for two different measurement projections at varying radii (2.5 cm and 8 cm). Historical estimates for annual operations from 2004 to 2009 are also included, along with assumptions regarding pion interactions and dose projections.

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Annual Dose and Radiation Metrics for RHIC II Operation

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  1. yearly dose numbers • Au + Au • RHIC II luminosity: 7X1027 1/(cm2 sec) • Weeks per year operation: 25 • Fraction of up time: 60% • radius: 2.5 cm • pion dose: 73 kRad • UPC electron dose: 82 kRad • Total dose: 155 kRad • TLD measured projection: 300 kRad • radius: 8 cm • pion dose: 7 kRad • UPC electron dose: 2 kRad • Total dose: 9 kRad • TLD measured projection: 29 kRad

  2. particle count • radius 2.5 cm, RHIC II projection • average pion rate from interactions: 3X105 Hz/(cm2) • average pion count for 1 Yr: 3X1012 1/(cm2) • TLD projection (pion assumption): 12X1012 1/(cm2) • History, 2004 estimate for 2006-2009 operation • average pion rate from interactions: 1.4X104 Hz/(cm2)

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