The Silicon Tracking System of the E16 experiment at J-PARC: construction, installation and commissioning in beam test experiments

Dairon Rodríguez Garcés; Rento Yamada; Kazuya Aoki; Lady Maryann Collazo Sánchez; David Emschermann; Hideto En'yo; Jürgen Eschke; Ulrich Frankenfeld; David Gutiérrez Menéndez; Johann M. Heuser; Masaya Ichikawa; Ralf Kapell; Irakli Keshelashvili; Jörg Lehnert; Tomoki Murakami; Shunnosuke Nagafusa; Wataru Nakai; Satomi Nakasuga; Megumi Naruki; Frederike Nickels; Shuta Ochiai; Kyoichiro Ozawa; Darío Alberto Ramírez Zaldívar; Adrian Rodríguez Rodríguez; Katia Santos Marrero; Christian Joachim Schmidt; Hans Rudolf Schmidt; Kerstin Schuenemann; Patryk Semeniuk; Mehulkumar Shiroya; Carmen Simons; Sindhu Subramanya; Oleksandr Suddia; Tomonori Takahashi; Maksym Teklishyn; Alberica Toia; Oleg Vasylyev; Robert Visinka; Yorito Yamaguchi; Wojciech Zabolotny

arXiv · 2606.19400

The Silicon Tracking System of the E16 experiment at J-PARC: construction, installation and commissioning in beam test experiments

View original source ↗Read source document ↗Export metadata ↓

Abstract

The J-PARC E16 experiment aims to search for signatures of chiral symmetry restoration. It studies in-medium modifications of vector mesons that decay via the dielectron channel. The measurements use a high-intensity 30 GeV proton beam with C and Cu targets at rates up to 10 MHz. To achieve this, the experiment upgrades its tracking, by introducing innermost detector modules constructed with the same technology and procedures as the modules of the Silicon Tracking System (STS) of the Compressed Baryonic Matter (CBM) experiment at Facility for Antiproton and Ion Research (FAIR). A total of 15 modules were assembled, tested, characterized and then installed in the E16 detector setup. The detector was commissioned in a beam test experiment at Tsukuba, where the detector modules could be exposed to a 3 GeV electron beam. In preparation for the beam test the modules were characterized and calibrated, and performance studies were accomplished to assess the quality of the setup. During beamtime, three modules were operated and illuminated in two planes by the electron beam. This paper presents the results of the construction, characterization, commissioning, and operation of the E16-STS modules in beam test experiments.

Explore related subjects

physics.ins-det nucl-ex

Keep this discovery

BibTeX RIS

Dairon Rodríguez Garcés, Rento Yamada, Kazuya Aoki, Lady Maryann Collazo Sánchez, David Emschermann, Hideto En'yo, Jürgen Eschke, Ulrich Frankenfeld, David Gutiérrez Menéndez, Johann M. Heuser, Masaya Ichikawa, Ralf Kapell, Irakli Keshelashvili, Jörg Lehnert, Tomoki Murakami, Shunnosuke Nagafusa, Wataru Nakai, Satomi Nakasuga, Megumi Naruki, Frederike Nickels, Shuta Ochiai, Kyoichiro Ozawa, Darío Alberto Ramírez Zaldívar, Adrian Rodríguez Rodríguez, Katia Santos Marrero, Christian Joachim Schmidt, Hans Rudolf Schmidt, Kerstin Schuenemann, Patryk Semeniuk, Mehulkumar Shiroya, Carmen Simons, Sindhu Subramanya, Oleksandr Suddia, Tomonori Takahashi, Maksym Teklishyn, Alberica Toia, Oleg Vasylyev, Robert Visinka, Yorito Yamaguchi, Wojciech Zabolotny. 2026-06-17. The Silicon Tracking System of the E16 experiment at J-PARC: construction, installation and commissioning in beam test experiments. https://arxiv.org/abs/2606.19400

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2026

High-Speed Semi-FE Readout Module for ATLAS MDT at HL-LHC: Design and Production-Level Characterization

The High-Luminosity upgrade of the Large Hadron Collider (HL-LHC) introduces increased demands on the ATLAS Muon Spectrometer, particularly in terms of data throughput, timing distribution and system reliability. The Phase-II Chamber Service Module (CSM) is a key component of the upgraded Monitored Drift Tube (MDT) trigger and readout system, providing a high-speed interface between the front-end electronics and the backend systems. This paper describes the design and implementation of the Phase-II CSM, together with its validation. The results show that the CSM supports two independent optical uplinks, each operating at a line rate of 10.24 Gbps, together with clock distribution and slow control in the expected operating environment. Integration with small-diameter MDT (sMDT) chambers and tests with the prototype L0MDT trigger system are also presented. The CSM boards are now in production and will be used for installation and integration during the upcoming LHC Long Shutdown.

physics.ins-det↗

arXiv2026

Spectral Discrimination of Deposited Gamma-Ray Energies in a Simulated CeBr$_3$ Scintillator

We show that wavelength measurements of individual detected optical photons may provide additional information about gamma-ray energy deposited in a CeBr$_3$ crystal when the detected-photon-count distributions overlap for nearby gamma-ray energies. Monoenergetic 662 and 629 keV gammas are used in a Geant4 simulation of a $25\times25\times20~\mathrm{mm^3}$ CeBr$_3$ crystal. Assuming a light yield of $6.0\times10^4$ photons/MeV, a wavelength-independent photon-detection efficiency of 30%, and a wavelength resolution of $\sigma_{\lambda}=40$ nm, we find that the fraction of photons reconstructed above 385 nm gives an event-level separation of $\sim$ 2 standard deviations between the 662 and 629 keV event populations selected within the same $\sim$ 1%-wide detected-photon-count interval. No timing or reconstructed interaction-position information is used. The result demonstrates, within the present simulation model, that event-dependent optical spectra can retain energy information beyond an undifferentiated photon count.

physics.ins-det↗

arXiv2026

Operation of a negative ion gas time projection chamber without electronegative fill gases

The high fidelity reconstruction of particle tracks in micropatterned gaseous time projection chambers renders this technology ideal for future rare-event searches, including direction-sensitive dark matter experiments. Large drift distances are typically required for such experiments, so that the overall spatial resolution is limited by diffusion. Negative ion drift exhibits lower diffusion than electron drift and is thus an attractive option for realising a large-scale detector. The use of electronegative gases to create negative ions introduces technical challenges, most notably a reduction in gain when compared to conventional gas mixtures. In this study, we demonstrate a new method for negative ion generation via dissociative electron attachment using the conventional molecular fill gas CF$_4$. Our optical measurements of negative ion drift indicate electron attachment lengths of $<$1 mm and comparable gain to electron avalanches. The individual negative ion avalanches were also time-resolved, allowing the number of ions reaching the readout to be counted. We measure an improved energy resolution by single ion counting, relative to an integrated electron avalanche signal measured under identical gain conditions.

physics.ins-det↗