The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Orpana, J. AU - Izotov, I. AU - Kalvas, T. AU - Koivisto, H. A. AU - Kronholm, R.J. AU - Laulainen, J.P. AU - Mansfeld, D. AU - Skalyga, V. AU - Tarvainen, O.A. ED - Schaa, Volker RW TI - Measurement of Microwave Frequencies Emitted by Instabilities of ECRIS Plasma with Waveguide Filters and Microwave Sensitive Diodes J2 - Proc. of ECRIS2016, Busan, Korea, August 28 - September 1, 2016 C1 - Busan, Korea T2 - International Workshop on ECR Ion Sources T3 - 22 LA - english AB - Periodic emission of strong microwave bursts at certain frequencies is a characteristic feature of kinetic instabilities in ECRIS plasmas. Precise measurement of the temporally evolving microwave frequency spectra requires a high bandwidth oscilloscope, which can make the experiments prohibitively expensive to conduct. An alternative low-cost method to study the microwave emission in narrow frequency bands is to apply band-pass waveguide filters and microwave sensitive diodes. The microwave emission from the plasma of the JYFL 14 GHz ECRIS has been studied with both methods. The results of the experiments are compared and their interpretation is discussed. It is demonstrated that the method based on filters and diodes can provide useful information about the microwave emission spectra induced by electron cyclotron instabilities. PB - JACoW CP - Geneva, Switzerland SP - 134 EP - 137 KW - ion KW - plasma KW - ECR KW - ECRIS KW - diagnostics DA - 2016/10 PY - 2016 SN - 978-3-95450-186-1 DO - 10.18429/JACoW-ECRIS2016-WEPP41 UR - http://jacow.org/ecris2016/papers/wepp41.pdf ER -