TY  - CONF
AU  - Sue, Y.
AU  - Futatsukawa, K.
AU  - Hasegawa, K.
AU  - Iijima, T.
AU  - Iinuma, H.
AU  - Inami, K.
AU  - Ishida, K.
AU  - Kawamura, N.
AU  - Kitamura, R.
AU  - Kondo, Y.
AU  - Mibe, T.
AU  - Miyake, Y.
AU  - Morishita, T.
AU  - Nakazawa, Y.
AU  - Otani, M.
AU  - Saito, N.
AU  - Takeuchi, Y.
AU  - Ushizawa, T.
AU  - Yamazaki, T.
AU  - Yasuda, H.Y.
AU  - Yotsuzuka, M.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - A Bunch Structure Measurement of Muons Accelerated by RFQ Using a Longitudinal Beam-Profile Monitor With High Time Resolution
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - J-PARC E34 experiment intends to measure the anomalous magnetic moment and electric dipole moment of muon precisely by a different way from the previous experiment. In this experiment, a low-emittance muon beam is provided using the muons with the thermal energy and the four-stage linac. The demonstration of the first muon RF acceleration with an RFQ linac was conducted and the transverse profile of the accelerated muons was measured last year. As one of the remaining issues for the beam-diagnostic system, the longitudinal beam profile after the RFQ should be measured to match the profile to the designed acceptance of the subsequent accelerator. For this purpose, the new longitudinal beam monitor using the micro-channel plate is under development. The time resolution aims to be around 30 to 40 ps corresponding to 1 % of a period of an operation frequency of the accelerator, which is 324 MHz. On November 2018, the bunch structure of accelerated muons of 89 keV with the RFQ was measured using this monitor at the J-PARC MLF. The latest analysis result of this measurement will be reported in this poster.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 37
EP  - 40
KW  - rfq
KW  - experiment
KW  - linac
KW  - background
KW  - electron
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOZZPLM2
UR  - http://jacow.org/ipac2019/papers/mozzplm2.pdf
ER  - 

TY  - CONF
AU  - Yotsuzuka, M.
AU  - Futatsukawa, K.
AU  - Hasegawa, K.
AU  - Iijima, T.
AU  - Iinuma, H.
AU  - Inami, K.
AU  - Kawamura, N.
AU  - Kitamura, R.
AU  - Kondo, Y.
AU  - Mibe, T.
AU  - Miyake, Y.
AU  - Morishita, T.
AU  - Nakazawa, Y.
AU  - Otani, M.
AU  - Saito, N.
AU  - Shimomura, K.
AU  - Sue, Y.
AU  - Yamazaki, T.
AU  - Yasuda, H.Y.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Development of the Longitudinal Beam Monitor with High Time Resolution for a Muon LINAC in the J-PARC E34 Experiment
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The J-PARC E34 experiment aims to measure the muon anomalous magnetic moment and the electric dipole moment with a high precision. In this experiment, ultra-slow muons generated from thermal muonium production and laser resonance ionization are accelerated in a multistage muon linac. In order to satisfy the experimental requirements, a suppression of the emittance growth between different accelerating cavities is necessary, and the transverse and longitudinal beam matching is important. Longitudinal beam monitor has to measure the bunch width with a precision of 1% corresponding to several tens of picoseconds. In addition, the beam monitor should be sensitive to a single muon, because the beam intensity during the commissioning is lower than the designed intensity. Therefore, we are developing a longitudinal beam monitor using a microchannel plate (MCP), and a measurement system using photoelectrons to estimate the performance of the beam monitor. On November 2018, the beam monitor has been successfully used in the muon RF acceleration test at the J-PARC. In this presentation, the results of the performance evaluation for this beam monitor are reported.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 2571
EP  - 2574
KW  - laser
KW  - experiment
KW  - linac
KW  - acceleration
KW  - DTL
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-WEPGW042
UR  - http://jacow.org/ipac2019/papers/wepgw042.pdf
ER  -