TY - JOUR

T1 - Proposal for VEPP-4M beam energy measurement using magnetic spectrometer with Compton calibration and photon detector

AU - Kaminskiy, V. V.

AU - Muchnoi, N. Yu

AU - Zhilich, V. N.

PY - 2017/8/3

Y1 - 2017/8/3

N2 - A method for circular e-/e+ accelerator beam energy measurement is proposed. A coordinate of an electron (or a positron) in a focusing magnetic spectrometer built in a circular accelerator depends on its energy, two spectrometer parameters, and the circulating beam energy. The spectrometer parameters can be determined using minimum electron energies from Compton backscattering with two laser wavelengths, and a coordinate detector for photons. The photon detector is calibrated separately at well-known beam energy. The VEPP-4M collider has appropriate equipment for the method implementation: built-in focusing magnetic spectrometer, Compton calibration system with two lasers and a photon coordinate detector. Thus, the proposed technique could be implemented with minimum efforts; tests and further upgrade are planned. The beam energy can be defined with expected uncertainty better than 10-4.

AB - A method for circular e-/e+ accelerator beam energy measurement is proposed. A coordinate of an electron (or a positron) in a focusing magnetic spectrometer built in a circular accelerator depends on its energy, two spectrometer parameters, and the circulating beam energy. The spectrometer parameters can be determined using minimum electron energies from Compton backscattering with two laser wavelengths, and a coordinate detector for photons. The photon detector is calibrated separately at well-known beam energy. The VEPP-4M collider has appropriate equipment for the method implementation: built-in focusing magnetic spectrometer, Compton calibration system with two lasers and a photon coordinate detector. Thus, the proposed technique could be implemented with minimum efforts; tests and further upgrade are planned. The beam energy can be defined with expected uncertainty better than 10-4.

KW - Beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors)

KW - Detector alignment and calibration methods (lasers, sources, particlebeams)

KW - Spectrometers

KW - Detector alignment and calibration methods (lasers, sources, particle-beams)

UR - http://www.scopus.com/inward/record.url?scp=85031047150&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/12/08/C08006

DO - 10.1088/1748-0221/12/08/C08006

M3 - Article

AN - SCOPUS:85031047150

VL - 12

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 8

M1 - 08006

ER -