TY - JOUR
T1 - Generation of positrons via pair-creation from Compton scattered gamma-rays
AU - Dobashi, K.
AU - Hirose, T.
AU - Kumita, T.
AU - Kurihara, Y.
AU - Muto, T.
AU - Omori, T.
AU - Okugi, T.
AU - Sugiyama, K.
AU - Urakawa, J.
N1 - Funding Information:
We would like to express our gratitude to all members of the ATF group for ATF operation. We are also indebted to the JLC calorimeter group for providing us an opportunity for counter calibration. In designing an off-axis mirror to improve the luminosity in the next step, we are extensively discussing with Drs. I. Ben Zvi, I.V. Pogorelski of BNL, and Dr. A. Tsunemi of SHI. This research was partially supported by a Research Fund of KEK for Cooperative Developments and a Grant-in-Aid for Scientific Research 10640294 from the Ministry of Education, Science, Sports and Culture of Japan.
PY - 1999/11/21
Y1 - 1999/11/21
N2 - An important role of positron (e+) polarization in future linear colliders is discussed in terms of effective polarization, which is closely related to the clear observation of interesting reaction processes in e-e+ collisions. In order to verify our proposed method, in which highly polarized e+ can be generated through Compton scattering of laser light off a relativistic electron (e-) beam, we performed an experiment to prove the principle and observed e+ productions for the first time. It was found that the production rates of e+ are not only consistent with those of e- and γ-ray but also in good agreement with numerical estimations.
AB - An important role of positron (e+) polarization in future linear colliders is discussed in terms of effective polarization, which is closely related to the clear observation of interesting reaction processes in e-e+ collisions. In order to verify our proposed method, in which highly polarized e+ can be generated through Compton scattering of laser light off a relativistic electron (e-) beam, we performed an experiment to prove the principle and observed e+ productions for the first time. It was found that the production rates of e+ are not only consistent with those of e- and γ-ray but also in good agreement with numerical estimations.
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U2 - 10.1016/S0168-9002(99)00677-4
DO - 10.1016/S0168-9002(99)00677-4
M3 - Article
AN - SCOPUS:0343353256
SN - 0168-9002
VL - 437
SP - 169
EP - 177
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2-3
ER -