Test Stand Measurements for an ILC Polarimeter
نویسندگان
چکیده
The setup of two different small scale teststands for measurements regarding an electron Cherenkov detector as part of the ILC polarimeters is presented. Component measurements already carried out are analyzed and others, foreseen for the near future, are discussed. The larger one of the two teststands features the old Cherenkov detector of the SLD experiment, which will be used as a reference for a number of crucial measurements. Especially, the requirements for the non-linearity of the read-out chain are studied in greater detail and methods for its precise measurement before and during operation are being developed accordingly.
منابع مشابه
9 F eb 2 00 9 Improvements to the ILC Upstream Polarimeter
Since the ILC is designed to allow measurements of masses and cross-sections of Standard Model as well as of possible new particles at the permille level, also the beam parameters like beam energy, polarisation and luminosity have to be controlled to this precision. While for the beam energy this goal has already been achieved at previous colliders, the up to now most precise polarisation measu...
متن کاملCompton Cherenkov Detector Development for ILC Polarimetry
In order to fully exploit the physics potential of the ILC, it will be necessary to measure (and control) beam parameters to a permille level precision. In case of the beam polarisation, this can only be achieved with dedicated high energy Compton polarimeters and by improving the detector linearity, as well as the calibration of the analyzing power. This note summarises results of an early tes...
متن کاملPrecision Polarimetry at the ILC: Concepts, Simulations and experiments
The precision physics program of the ILC requires precise knowledge of the state of beam polarisation. In fact the Compton polarimeters intended for the ILC will have to measure the polarisation with error a factor of 2 smaller than the previous best measurement at the SLAC SLD experiment. In order to further reduce measurement error, spin tracking simulations in the ILC Beam Delivery System su...
متن کاملThe E166 experiment: Development of an undulator-based polarized positron source for the international linear collider
A longitudinal polarized positron beam is foreseen for the international linear collider (ILC). A proof-of-principle experiment has been performed in the final focus test beam at SLAC to demonstrate the production of polarized positrons for implementation at the ILC. The E166 experiment uses a 1 m long helical undulator in a 46.6 GeV electron beam to produce a few MeV photons with a high degree...
متن کاملar X iv : 0 70 9 . 28 59 v 1 [ ph ys ic s . in s - de t ] 1 8 Se p 20 07 Simulation Studies and Detector Scenarios for an ILC Polarimeter
Electron polarimetry at the International Linear Collider (ILC) will be based on Compton scattering using a laser colliding head-on with the incident lepton beam in the beam delivery system. The shape of the differential Compton cross section depends strongly on the helicity states of electron beam and laser. Asymmetries can then be determined from different helicity configurations, which scale...
متن کامل