#freeze *Ultra-Slow antiproton beam transport line [#aec76f79] After the cooling, antiprotons were extracted from the trap and transported to experimental chambers via this transport beam line. ** differential pumping system [#d2e7b5fb] To maintain the pressure difference between the Antiproton trap and experimental chambers with gas targets, this beam line was designed to work a differential pumping system. ** elctrostatic lens [#v7bc7236] Three electrostatic lens systems were installed to focus ultra-slow antiproton beams. CENTER:&ref(http://radphys4.c.u-tokyo.ac.jp/asacusa/wiki/image/va.jpg,241x294);