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  • Description is exactly "Three artifacts from Burton Richter: 1) Sapphire window from Princeton-Stanford electron-electron collider, 2) Distributed ion pump from SPEAR R&D, 3)SPEAR spare (unused) vacuum - Corrugated metal tube, 18 inches long and 6.5 inches in diameter, center section of the vacuum chamber used in early days of SPEAR collider, - at the center of the Mark I detector. Vacuum chamber was very thin. Particles produced in collisions passed through it into the detector. With explanatory email from Dr. Richter. "

2009-020 Burton Richter Artifacts

Three artifacts from Burton Richter: 1) Sapphire window from Princeton-Stanford electron-electron collider, 2) Distributed ion pump from SPEAR R&D, 3)SPEAR spare (unused) vacuum - Corrugated metal tube, 18 inches long and 6.5 inches in diameter,…