TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.23.22 TI - Thunderhead Accelerator JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 23 IS - SP - 22 EP - PY - 2009/06/30/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.23.22 A1 - Schirber, Michael ER -