TY - JOUR
T1 - High-rate performance of a time projection chamber for an H-dibaryon search experiment at J-PARC
AU - Kim, S. H.
AU - Ichikawa, Y.
AU - Sako, H.
AU - Ahn, J. K.
AU - Akaishi, T.
AU - Ashikaga, S.
AU - Choi, S. W.
AU - Ekawa, H.
AU - Hasegawa, S.
AU - Hayakawa, S.
AU - Jung, W. S.
AU - Kang, B. M.
AU - Lee, J. Y.
AU - Nanamura, T.
AU - Sato, S.
AU - Shirotori, K.
AU - Suzuki, K.
AU - Tanida, K.
AU - Yang, S. B.
AU - Yoshida, J.
N1 - Funding Information:
The authors thank the HIMAC staff for their support and particularly appreciate the help of E. Takada throughout the HIMAC beam test. This research was supported by the National Research Foundation of Korea (Grant No. 2017R1A2B2011334 ), BK21-Plus Program (Initiative for Creative and Independent Scientist), Republic of Korea , Korea University , a Grant-in-Aid for Scientific Research on Innovative Areas from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan , Toray Science Foundation, Japan , JSPS KAKENHI, Japan (Grant No. 18H03706 and 16K17714 ) and the TJ Park Science Fellowship of POSCO TJ Park Foundation, Japan .
Funding Information:
The authors thank the HIMAC staff for their support and particularly appreciate the help of E. Takada throughout the HIMAC beam test. This research was supported by the National Research Foundation of Korea (Grant No. 2017R1A2B2011334), BK21-Plus Program (Initiative for Creative and Independent Scientist), Republic of Korea, Korea University, a Grant-in-Aid for Scientific Research on Innovative Areas from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, Toray Science Foundation, Japan, JSPS KAKENHI, Japan (Grant No. 18H03706 and 16K17714) and the TJ Park Science Fellowship of POSCO TJ Park Foundation, Japan.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - We have developed a gas electron multiplier (GEM)-based time projection chamber (TPC) for the H-dibaryon search experiment at J-PARC. High-rate K− beam particles enter a TPC gas volume of approximately 0.2 m3, in a direction perpendicular to the electric field. A long-rectangular hollow section is located inside the TPC volume to accommodate a diamond target. We commissioned the TPC using 230-MeV protons with beam rates of up to 1 MHz. The TPC data acquisition system collected 5768 pad signals in full readout mode, with almost 100% efficiency, at a preset trigger rate of 230 Hz. We operated the TPC in an Ar/CH4 gas mixture (90/10) without a magnetic field. The spatial resolutions on the pad plane are measured to be 400–700μm, which correspond to 230–300μm in a magnetic field of 1 T. We confirmed high tracking capability at beam rates of up to 1 MHz.
AB - We have developed a gas electron multiplier (GEM)-based time projection chamber (TPC) for the H-dibaryon search experiment at J-PARC. High-rate K− beam particles enter a TPC gas volume of approximately 0.2 m3, in a direction perpendicular to the electric field. A long-rectangular hollow section is located inside the TPC volume to accommodate a diamond target. We commissioned the TPC using 230-MeV protons with beam rates of up to 1 MHz. The TPC data acquisition system collected 5768 pad signals in full readout mode, with almost 100% efficiency, at a preset trigger rate of 230 Hz. We operated the TPC in an Ar/CH4 gas mixture (90/10) without a magnetic field. The spatial resolutions on the pad plane are measured to be 400–700μm, which correspond to 230–300μm in a magnetic field of 1 T. We confirmed high tracking capability at beam rates of up to 1 MHz.
KW - Gas electron multiplier
KW - J-PARC
KW - Time projection chamber
UR - http://www.scopus.com/inward/record.url?scp=85067852026&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067852026&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2019.06.050
DO - 10.1016/j.nima.2019.06.050
M3 - Article
AN - SCOPUS:85067852026
SN - 0168-9002
VL - 940
SP - 359
EP - 370
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -