Commissioning of the Beam Energy Position Monitor System for the Superconducting RIKEN Heavy-ion Linac

Watanabe, Tamaki; Fukunishi, Nobuhisa; Hanamura, Kotoku; Imao, Hiroshi; Kamigaito, Osamu; Kamoshida, Atsushi; Koyama, Ryo; Nishi, Takahiro; Ozeki, Kazutaka; Sakamoto, Naruhiko; Toyama, Takeshi; Uchiyama, Akito; Watanabe, Yutaka; Yamada, Kazunari

doi:10.18429/JACoW-IBIC2020-FRAO04

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RIS citation export for FRAO04: Commissioning of the Beam Energy Position Monitor System for the Superconducting RIKEN Heavy-ion Linac

TY  - CONF
AU  - Watanabe, T.
AU  - Fukunishi, N.
AU  - Hanamura, K.
AU  - Imao, H.
AU  - Kamigaito, O.
AU  - Kamoshida, A.
AU  - Koyama, R.
AU  - Nishi, T.
AU  - Ozeki, K.
AU  - Sakamoto, N.
AU  - Toyama, T.
AU  - Uchiyama, A.
AU  - Watanabe, Y.
AU  - Yamada, K.
ED  - Tavares, Daniel
ED  - Picoreti, Renan
ED  - Bruno, Gustavo
ED  - Marques, Sergio
ED  - Schaa, Volker R.W.
TI  - Commissioning of the Beam Energy Position Monitor System for the Superconducting RIKEN Heavy-ion Linac
J2  - Proc. of IBIC2020, Santos, Brazil, 14-18 September 2020
CY  - Santos, Brazil
T2  - International Beam Instrumentation Conference
T3  - 9
LA  - english
AB  - The beam commissioning for the RIKEN Heavy-ion Linac (RILAC) upgrade, including the new Superconducting Linac (SRILAC) has been successfully completed. These RILAC upgrade aims at promoting super-heavy element searches and the radioactive isotope (RI) production for medical use. When we accelerate the beam by the SRILAC, we must definitely reduce the beam loss under 1 W/m. To constantly monitor the beam nondestructively, we have developed the new system (BEPM) measuring simultaneously not only the beam position but also the beam energy by measuring the time of flight of the beam. This system has the great advantage that can handle time-chopped beam by synchronizing the measurement system with the beam-chopping signal. At the beginning of the commissioning, the beam was chopped to 3% duty to make the SRILAC cavity protected from the beam loss. Even though the beam intensity was 15 enA, the beam position and energy were accurately measured. We measure the beam position to an accuracy of ±0.1 mm and the beam energy to that of several 10⁻⁴. Here, we present details concerning the BEPM system and commissioning results.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 295
EP  - 302
KW  - vacuum
KW  - pick-up
KW  - SRF
KW  - cavity
KW  - controls
DA  - 2020/10
PY  - 2020
SN  - 2673-5350
SN  - 978-3-95450-222-6
DO  - doi:10.18429/JACoW-IBIC2020-FRAO04
UR  - https://www.jacow.org/ibic2020/papers/frao04.pdf
ER  -