Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.16828 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918472539176960 |
|---|---|
| author | Labonté, Mathias C. Cebra, Daniel Sweger, Zachary Eppley, Geary Geurts, Frank Söhngen, Yannick Herrmann, Norbert Rubio, Esteban Weidenkaff, Philipp Deppner, Ingo Loizeau, Pierre-Alain Frühauf, Jochen Emschermann, David Seck, Florian Tlusty, David Hu, Dongdong Sun, Yongjie Ljubicic, Tonko Wang, Yi |
| author_facet | Labonté, Mathias C. Cebra, Daniel Sweger, Zachary Eppley, Geary Geurts, Frank Söhngen, Yannick Herrmann, Norbert Rubio, Esteban Weidenkaff, Philipp Deppner, Ingo Loizeau, Pierre-Alain Frühauf, Jochen Emschermann, David Seck, Florian Tlusty, David Hu, Dongdong Sun, Yongjie Ljubicic, Tonko Wang, Yi |
| contents | The STAR experiment at RHIC at Brookhaven National Laboratory completed the installation of an endcap time-of-flight subsystem (eTOF) in February 2019. The eTOF subsystem provided essential mid-rapidity particle identification (PID) for the fixed-target (FXT) portion of phase II of the beam energy scan (BES II). The FXT program allowed BES II to include center-of-mass energies from $\sqrt{s_{_{NN}}} = 3.0$ GeV to $\sqrt{s_{_{NN}}} = 7.7$ GeV, not accessible by colliding beams. The eTOF detectors and readout electronics were designed for the CBM experiment at FAIR and adapted for use at STAR. In this paper, we describe the details of the system in terms of geometrical layout, acceptance, calibration, hit reconstruction, and particle identification. The system achieved a time resolution of about 70 ps and a PID efficiency of about 70\%, meeting the design goals of the project. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_16828 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Performance of the Endcap Time-of-Flight detector in the STAR beam-energy scan Labonté, Mathias C. Cebra, Daniel Sweger, Zachary Eppley, Geary Geurts, Frank Söhngen, Yannick Herrmann, Norbert Rubio, Esteban Weidenkaff, Philipp Deppner, Ingo Loizeau, Pierre-Alain Frühauf, Jochen Emschermann, David Seck, Florian Tlusty, David Hu, Dongdong Sun, Yongjie Ljubicic, Tonko Wang, Yi Instrumentation and Detectors Nuclear Experiment The STAR experiment at RHIC at Brookhaven National Laboratory completed the installation of an endcap time-of-flight subsystem (eTOF) in February 2019. The eTOF subsystem provided essential mid-rapidity particle identification (PID) for the fixed-target (FXT) portion of phase II of the beam energy scan (BES II). The FXT program allowed BES II to include center-of-mass energies from $\sqrt{s_{_{NN}}} = 3.0$ GeV to $\sqrt{s_{_{NN}}} = 7.7$ GeV, not accessible by colliding beams. The eTOF detectors and readout electronics were designed for the CBM experiment at FAIR and adapted for use at STAR. In this paper, we describe the details of the system in terms of geometrical layout, acceptance, calibration, hit reconstruction, and particle identification. The system achieved a time resolution of about 70 ps and a PID efficiency of about 70\%, meeting the design goals of the project. |
| title | Performance of the Endcap Time-of-Flight detector in the STAR beam-energy scan |
| topic | Instrumentation and Detectors Nuclear Experiment |
| url | https://arxiv.org/abs/2602.16828 |