Kuriki, M. Kashiwagi, S. Nagoshi, H. Negishi, K. Okugi, T. Omori, T. Satoh, M. Seimiya, Y. Sumitomo, Y. Takahashi, T. Urakawa, J. Yokoya, K. JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-THPO127 English 958-961 THPO127 positron acceleration beam-loading cavity booster Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-THPO127 http://jacow.org/linac2018/papers/thpo127.pdf E-Driven method is a technical backup for positron source for ILC. In the positron source, the positron is generated and accelerated in a multi-bunch format with gaps in a macro-pulse. We employ AM (Amplitude Modulation) to suppress the transient beam-loading, but a small fluctuation is still expected, depending on the compensation accuracy. In this article, the positron yield which is ratio of numbers of positrons over electrons, is evaluated as a function of the compensation accuracy. With this result and the detail investigation of the beam loading compensation accuracy by AM, the positron yield of E-Driven Positron source for ILC is evaluated.