ROKK-1M Facility Home Page
The ROKK-1M facility at Budker Institute of Nuclear Physics generates high energy polarized gamma-ray beams by backscattering of laser light against the high energy electron and positron beams of the VEPP-4M collider. The facility design allows to obtain backscattering of laser light on electron and positron beams separately or simultaneously. Tagging and/or collimation is applied to select a narrow energy band from the gamma ray beam energy spectrum. Operating in a laser polarimeter mode, the ROKK1-M facility is able to measure transverse and longitudinal polarization of the electron and positron beams in the VEPP-4M collider.
An external gamma-ray beam is an effective instrument for 
providing experiments in the fields of  high  energy  and  
photonuclear physics.  Compton  Backscattering  (CBS)  of 
laser light on high energy  electrons  in  storage  rings 
is the most advanced technique to produce gamma-ray beams 
of high utilization quality. This method  is  now  widely 
used in a number of nuclear physics laboratories

    The ROKK-1M facility is a  new  step in the series of 
facilities, using CBS of laser light from a  high  energy 
electron beam, had been constructed at  the  Budker  INP, 
Novosibirsk. The ROKK-1M facility  began  to  operate  in 
May, 1993  - one month later the VEPP-4M collider got the 
first electron beam. 

    The facility, designed  as  an  universal  apparatus, 
covers a wide range of applications in different areas of 
the experimental physics:
  • photonuclear physics experiments

  • investigation of non-linear QED effects

  • real-time measurement of the transverse or longitudial spin polarization of colliding beams

  • precise measurement of the colliding beams energies by the resonance depolarization technique

  • precise calibration of the energy response and space
    resolution of different detector systems

This page was last updated December 28, 1998 
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