A brief EEE view of signal QED is presented. The research has been concentrated on the virtual photon modes of ultra relativistic shock waves in a bunch-beampipe system, and real photon modes of Coherent RF Beamstrahlung, CRFB. Physically, the virtual photons emitted by a bunch were treated as a travelling pseudo wave packet in a flight coaxial cavity constructed by bunch-wakefield core and beampipe. Mathematically, it is a boundary solution of shock wave excited by ultra relativistic impulses of a bunch. The new modes of solution: VTA, VTEM, VTM, VLE are virtual photon packets and RTE, RTM, RTEM are real photon modes of CRFB. By these results we measured and corrected BEPC bunch length from signals of: (1) TOF reference of BES, (2) BPM of BEPC. (3) Colliding CRFB of BEPC-BES coupling signal, as well as (4) the ordinary method of Synchrotron Radiation. All results of the measured bunch lengths are in accordance with the design length of BEPC. And were verified by the BES data of vertex reconstruction of hadron events. We also found that CRPB is the unknown jam source of BES electronics. VLE virtual photons can accelerate particles.
展开▼
