Title :
Virtual photon impulse of bunch, beampipe response, coherent RP Beamstrahlung; and BEPC bunch length, BES jam, virtual acceleration
Author_Institution :
Inst. of High Energy Phys., Acad. Sinica, Beijing, China
Abstract :
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
Keywords :
beam handling equipment; beam handling techniques; particle beam diagnostics; synchrotron radiation; BEPC bunch length; BEPC-BES coupling signal; BES electronics; BES jam; Coherent RF Beamstrahlung; Synchrotron Radiation; beampipe response; bunch response; bunch-beampipe system; bunch-wakefield core; coherent RP Beamstrahlung; flight coaxial cavity; hadron events; real photon modes; signal QED; travelling pseudo wave packet; ultra relativistic impulse; ultra relativistic shock wave; virtual acceleration; virtual photon impulse; virtual photon modes; Acceleration; Coaxial components; Laboratories; Laser theory; Masers; Packaging; Partial differential equations; Physics; Radio frequency; Tellurium;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.309348