Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session C07: Instrumentation: DAQ and Beam Diagnostics |
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Chair: Maria Anastasiou, Lawrence Livermore Natl Lab Room: Hilton Waikoloa Village Queens 6 |
Tuesday, November 28, 2023 7:00PM - 7:15PM |
C07.00001: Overview of DAQ system of J-PARC E16 experiment Masaya Ichikawa, Ryotaro Honda, Shunnosuke Nagafusa, Wataru Nakai, Tomonori Takahashi Hadrons are elementary excitations of the QCD vacuum, and their properties reflect the state of the vacuum. The properties of the vacuum are theoretically suggested to be modified at finite density or temperature. Therefore, measuring hadrons under such an environment will lead to understanding of the property of QCD vacuum. |
Tuesday, November 28, 2023 7:15PM - 7:30PM |
C07.00002: Performance improvement of a GEM readout module for J-PARC E16 experiment Shunnosuke Nagafusa, Ryotaro Honda, Masaya Ichikawa, Wataru Nakai, Tomonori Takahashi Hadron mass spectra are expected to be modified in nuclei due to a partial restoration of chiral symmetry. The primary objective of the E16 experiment is to investigate origin of hadron mass by measuring the mass spectral modification of vector meson in nuclei. We aim to obtain definitive information of the mass origin through systematic data acquisition with high statistical precision, acquiring data with 100 times the statistics of the previous study, KEK-PS E325 experiment. |
Tuesday, November 28, 2023 7:30PM - 7:45PM |
C07.00003: Detector readout system for S-2S experiments at J-PARC Fumiya Oura, Kengo Ebata, Manami Fujita, Toshiyuki Gogami, Takeshi K Harada, Shuhei H Hayakawa, Yudai Ichikawa, Kento Kamada, Koji Miwa, Tomofumi Nagae, Toshiyuki Takahashi, Hirokazu Tamura, Mifuyu Ukai, Takeshi O Yamamoto A lot of experiments using the S-2S spectrometer with high momentum resolution are planned at the J-PARC K1.8 beamline for understanding baryon-baryon interactions in the S = −2 sector. The first experiment will be to precisely measure the missing mass of 12ΞBe via the 12C(K-, K+) reaction at the Active Fiber Target (AFT) and achieve the world's highest precision spectroscopy of Ξ hypernucleus (E70). In parallel with the experiment, the E96 experiment runs to observe X-rays from the Xi atom produced in the AFT target using a Ge detector for the first time. |
Tuesday, November 28, 2023 7:45PM - 8:00PM |
C07.00004: High-speed data processing in the RIBF DAQ system using the Alveo data-center accelerator card Yuto Ichinohe, Hidetada Baba, Shoko Takeshige, Taku Gunji High-speed data processing in DAQ using hardware accelerators such as GPU and FPGA has been gaining attention to accommodate the increasing intensity of accelerator beams. We have been investigating the possibility of implementing such hardware accelerator devices for the DAQ system at RIKEN RIBF. Alveo U50 is one of the series of data center accelerator cards provided by Xilinx, which contains an AMD Ultrascale+ FPGA chip with 8GB HBM (high-bandwidth memory). The board supports PCI Express for installation in typical workstations or computing servers, as well as 100Gbps connectivity with a QSFP28 port. Using the Alveo U50, we have implemented the detector calibration and track reconstruction algorithm of one of the PPAC detectors of the BigRIPS separator and succeeded in reproducing the results obtained with the typical offline analysis software. In particular, the data processing throughput exceeds that of CPU, even though the C++ codes are automatically converted to RTL by high-level synthesis without any manual tuning of the RTL design. We see potential in this scheme and are exploring the possibility of further applications. In this contribution, we will present the current status of this project and future prospects. |
Tuesday, November 28, 2023 8:00PM - 8:15PM |
C07.00005: Development of a High-Bandwidth Waveform Processing System using RFSoC for RI Beam Experiments Shoko Takeshige, Hidetada Baba, Kazuyoshi Kurita, Yasuhiro Togano, Juzo Zenihiro, Yuto Hijikata We have been developing a digital waveform processing system with the Xilinx Zynq UltraScale+ RFSoC named CALDERA for high-resolution timing and charge measurement of plastic scintillators. It is the optimized system for experiments at RIKEN RI Beam Factory (RIBF) in Japan, to perform particle identification of RI beams. |
Tuesday, November 28, 2023 8:15PM - 8:30PM |
C07.00006: A filter implementation in a streaming data acquisition system at Grand RAIDEN in RCNP Fumiya Furukawa, Shinsuke Ota, Nobu Kobayashi, Sun Young Ryu, Kotaro Shirotori, Ryotaro Honda, Youichi Igarashi, Hidetada Baba, Taku Gunji, Tomoaki Hotta, Manabu Miyabe, Hiroyuki Noumi, Masanori Dozono, Jiawei CAI, Keita Kawata, Fumitaka ENDO, Hiroaki Shibakita, Che-Sheng LIN, Tomonori Takahashi, Masayoshi Shoji, Masahiro Ikeno Pair condensation caused by an effective attractive interaction is a common phenomenon in various fermion many-body systems. In the nucleonic system, neutron pair condensation is found via the measurement of neutron-pair transfer reaction while the existence of proton-neutron pair condensation is not confirmed yet. In order to quantify the p-n pair condensation, we plan to measure a pair transfer reaction of (4He,6Li) by using the Grand Riden magnetic spectrometer at RCNP. |
Tuesday, November 28, 2023 8:30PM - 8:45PM |
C07.00007: FSU DAQ – A native GUI DAQ for CAEN 1st generation digitizers Tsz Leung Tang FSUDAQ is a general-purpose GUI DAQ program for CAEN x725(s), x730, and x740 series digitizer with DPP-PHA, DPP-PSD, or DPP-QDC firmware. It provides complete control of the digitizer via direct manipulation of the register value. Fast data acquisition with trace saving is realized by directly taking the buffer from digitizers and saving it into hard disk or memory. It is also equipped with a real-time event builder that allows a customized online analysis pipeline to display 1-D and 2-D histograms. We will also present the FSU SOLARIS DAQ for the SOLARIS project in FRIB. |
Tuesday, November 28, 2023 8:45PM - 9:00PM |
C07.00008: The Use of Secondary Stripping in Tandem Accelerators Philippe A Collon, Adam M Clark, Lauren K Callahan, Austin D Nelson, Liam Wood Electrostatic tandem accelerator systems are used all around the world for applications such as nuclear astrophysics, medical isotope production, and accelerator mass spectrometry. Within a positively charged terminal, each one is equipped with gas and/or foil stripping used to convert the negatively charged injected beam into a positively charged, high energy beam. The 10 MV FN Tandem at the University of Notre Dame's Nuclear Science Laboratory has the additional option for a second foil stripper to populate higher charge states and reach higher energies. A demonstration of the technique as well as measured charge state distributions will be presented. It was found that for most of the beams tested, secondary stripping allowed higher energies with higher yields than the terminal stripping alone could achieve. |
Tuesday, November 28, 2023 9:00PM - 9:15PM |
C07.00009: Development of a Portable, Differential-Absorption Spectrometer for Use at Underdiagnosed Electron Accelerators Samuel Henderson, David G Walter, Karl Smith, David K Hemsing, Bruce E Carlsten, Nicholas Dallmann Many small electron beam facilities exist around the United States which provide intense electron beams of several hundred mA into open air. These facilities can provide high dose rates for various measurements and are also convenient for experiments that require rapid changes in their set up, due to the ease of adjusting an experiment in open air. However, many of these facilities do not possess the means to identify the energy of their electron beam to a high precision, which limits the quality of data that can be obtained. We developed and commissioned a portable spectrometer called SPATC (a Spectrometer Purposed for Accelerator Testing and Certification), specifically to certify the beam energy of an accelerator while only requiring power from a wall outlet from the facility. SPATC is placed in front of the accelerator beam window in open air and measures the differential absorption of electrons as they stop in various thicknesses of aluminum. These data are then used to extract a central beam energy and beam distribution by comparing to simulated data in Geant4. This method for determining a beam energy was validated by comparing to magnetic spectrometer measurements and was found to agree well for three different energy electron beams. The design of SPATC and its commissioning experiment will be shown, along with the analysis procedure to extract beam energies. Finally, we will present ongoing work to improve the energy precision of this spectrometer. |
Tuesday, November 28, 2023 9:15PM - 9:30PM |
C07.00010: Development of a method for detecting γ-rays from high-energy laser plasma and test experiments Ryota Iwasaki, Atsushi Tamii, Nobu Kobayashi, Shinsuke Ota, Azusa Inoue, Rei Niina, Hiroki Rokujo, Kazuma Nakazawa, Mamiko Nishiuchi, Hironao Sakaki, Kotaro Kondo, Akira Kon, Chang Liu, Takahiro Kawabata, Tatsuya Furuno, Seiya Tsuji, Yuya Honda, Megumi Niikura, Ibuki Takemoto, Oliver Wieland, Tatsuhiko Miyatake With advances in laser technology, the achievable laser intensity at focus is increasing every year. As a result, the energy of electrons emitted from the solid density plasma produced by laser irradiation has reached several tens of MeV of temperature. |
Tuesday, November 28, 2023 9:30PM - 9:45PM |
C07.00011: Development of AC-LGAD for Precision Measurement with High-Intensity Pulsed Muon Beam Shoichiro Nishimura, Tomoka Imamura, Phanthip Jaikaew, Sayuka Kita, Koji Nakamura, Isao Watanabe At the Muon Experimental Facility (MUSE) of the Materials and Life Science Experimental Facility (MLF) at J-PARC, a wide range of researches including muon precision measurement experiments and physical properties experiments are being conducted or planned using high-intensity pulsed muon beams. By using high-intensity pulsed beams, high statistics can be obtained in a short time. On the other hand, distortion of time spectra due to pile-up event loss is a major problem. We focused on the Low Gain Avalanche Detector (LGAD), which can segment the detector and signal pulses return to their original level within a few nanoseconds. |
Tuesday, November 28, 2023 9:45PM - 10:00PM |
C07.00012: Commissioning of a Multi-Reflection Time-of-Flight Mass Spectrometer for the CHIP-TRAP Penning trap apparatus Ramesh Bhandari, Madhawa H Gamage, Mehedi Hasan, Dilanka Perera, Savannah Limarenko, Matthew Redshaw The Central Michigan University (CMU) is developing the CMU High Precision Penning trap (CHIP-TRAP) for precise mass measurements on stable and long-lived radioactive isotopes. The system includes a laser ablation source (LAS) and a Penning ion trap source (PITS) to generate ions from solid and gaseous samples. To improve efficiency and sensitivity, a multi-reflection time-of-flight mass separator (MR-TOF-MS) is implemented to remove contaminant ions before reaching the Penning trap. The MR-TOF-MS uses electrostatic mirror electrodes to reflect ions, increasing their path length and enabling separation based on m/q ratio. A Bradbury-Nielsen gate will allow only desired ions to pass through. CHIP-TRAP features two hyperbolic precision measurement traps for simultaneous cyclotron frequency comparisons and a cylindrical capture trap for identification and elimination of contaminant ions. All traps will be held in a 12 T magnetic field and maintained at 4 K using a pulse tube cryocooler. This presentation will cover the latest developments in the design, construction, and testing of the ion sources, beamline, and cryocooler in the CHIP-TRAP project. It will provide updates on the overall progress of the project, including the assembly, fabrication, and commissioning of the MR-TOF-MS. Initial results from the MR-TOF-MS will be presented, focusing on the technical aspects and the scientific significance of the research. |
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