Publications
Publication Information
| Title | The CLAS12 Low Threshold Cherenkov Detector |
| Authors | Maurizio Ungaro, David Anderson, Gegham Asryan, Mary Ann Antonioli, Peter Bonneau, Volker Burkert, Steven Christo, Morgan Cook IV, Burcu Duran, Brian Eng, Amanda Hoebel, Denwood Insley, George Jacobs, Sylvester Joosten, Mindy Leffel, Tyler Lemon, Marc Mcmullen, Zein-Eddine Meziani, Robert Miller, Pablo Campero Rojas, Youri Sharabian, Amrit Yegneswaran |
| JLAB number | JLAB-PHY-19-3122 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4869 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Nuclear Instruments & Methods in Physics Research, Section A Volume 957 Page(s) 163420 Refereed | |
| Publication Abstract: | The CLAS Cherenkov threshold gas detector was instrumental for electron identification in the Hall B 6 GeV era at Jefferson Lab. The detector's scope has been modified for the new CLAS12 spectrometer to identify ?+ and ?? for momenta greater than 3.5 GeV, thus becoming a Low Threshold Cherenkov Counter (LTCC). This was accomplished with a refurbishment of the gas container, its windows, mirrors, Winston light collecting cones, and photomultipliers. The design, construction, and performance of the refurbished LTCC are described. The lightweight mirrors and Winston cones have been re-surfaced with a highly reflective coating, the 5-in photomultiplier tube entrance windows have been treated with p-terphenyl to enhance the ultraviolet response, and the gas volume has been expanded to increase the thickness of the radiator gas and correspondingly the number of photoelectrons in the response signal. The LTCC response calibration has been performed on the single photoelectron signals, and the |
| Experiment Numbers: | E12-19-003, other |
| Group: | Hall B |
| Document: | |
| DOI: | https://doi.org/10.1016/j.nima.2020.163420 |
| Accepted Manuscript: | |
| Supporting Documents: | |
| Supporting Datasets: | |