TY - GEN
T1 - New design of a tapered-coupler BPM toward simpler geometry and flatter frequency response
AU - Toyama, T.
AU - Koseki, T.
AU - Kuboki, H.
AU - Okada, M.
AU - Uno, W.
AU - Ichikawa, A.
AU - Nakamura, K.
AU - Nakaya, T.
N1 - Funding Information:
This work was partially supported by MEXT KA-KENHI Grant Number 25105002.
Funding Information:
* Work partially supported by MEXT KAKENHI Grant Number 25105002 † takeshi.toyama@kek.jp
Publisher Copyright:
© 2018 by JACoW - cc Creative Commons Attribution 3.0.
PY - 2017
Y1 - 2017
N2 - The tapered-coupler stripline beam position monitor has been used for the intra-bunch feedback system in the J-PARC MR. It should be realized with a special shaped stripline whose width is tailored exponentially and whose gap distance between the inner surface of the beam pipe should be also decreasing as a exponential function in order to keep the characteristic impedance at 50 ohm. This 3D varying geometry makes it difficult to achieve the good balance between the electrode responses to the beam. We propose a new design method with a groove, which may give simpler geometry and flatter frequency response.
AB - The tapered-coupler stripline beam position monitor has been used for the intra-bunch feedback system in the J-PARC MR. It should be realized with a special shaped stripline whose width is tailored exponentially and whose gap distance between the inner surface of the beam pipe should be also decreasing as a exponential function in order to keep the characteristic impedance at 50 ohm. This 3D varying geometry makes it difficult to achieve the good balance between the electrode responses to the beam. We propose a new design method with a groove, which may give simpler geometry and flatter frequency response.
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U2 - 10.18429/JACoW-IBIC2017-TUPCF13
DO - 10.18429/JACoW-IBIC2017-TUPCF13
M3 - Conference contribution
AN - SCOPUS:85071953405
T3 - Proceedings of the 6th International Beam Instrumentation Conference, IBIC 2017
SP - 237
EP - 239
BT - Proceedings of the 6th International Beam Instrumentation Conference, IBIC 2017
PB - Joint Accelerator Conferences Website (JACoW)
T2 - 6th International Beam Instrumentation Conference, IBIC 2017
Y2 - 20 August 2017 through 24 August 2017
ER -