Preliminary results from the cosmic data taking of the BESIII cylindrical GEM detectors

Amoroso, A.; Ferroli, R. Baldini; Balossino, I.; Bertani, M.; Bettoni, D.; Bortone, A.; Calcaterra, A.; Cerioni, S.; Cheng, Wenjing; Cibinetto, G.; Ramusino, A. Cotta; Cossio, F.; Rolo, M.; Mori, F. De; Destefanis, M.; Dong, J.; Evangelisti, F.; Farinelli, R.; Fava, L.; Felici, G.; Garzia, I.; Gatta, M.; Giraudo, G.; Gramigna, S.; Greco, M.; Guo, A. Q.; Huang, Z.; Hou, Y.; Imoehl, W.; Lavezzi, L.; Lu, Xinfang; Maggiora, M.; Malaguti, R.; Mangoni, A.; Marcello, S.; Melchiorri, M.; Mitchell, R. E.; Pace, E.; Pacetti, S.; Patterí, P.; Pellegrino, J.; Rivetti, A.; Shi, R. S.; Scodeggio, M.; Sosio, S.; Spataro, S.; Wang, H.P.; Wang, L.L.; Wu, L. H.; Zhao, J. Y.

doi:10.1088/1748-0221/15/08/c08004

Cited by 9 publications

(11 citation statements)

References 8 publications

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“…With two out of three final detectors in a cosmic stand in Beijing operating remotely some preliminary reconstruction analyses have been performed [8].…”

Section: Resultsmentioning

confidence: 99%

Operation and readout of the CGEM Inner Tracker

Balossino

2022

Preprint

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A recently approved ten-year extension of the BESIII experiment (IHEP, Beijing) motivated an upgrade program for both the accelerator and the detector.In particular, the current inner drift chamber is suffering from aging and the proposal is to replace it with a detector based on the cylindrical GEM technology.The CGEM inner tracker (CGEM-IT) consists of three coaxial layers of triple GEM. The tracker is expected to restore efficiency, improve z-determination and secondary vertex position reconstruction with a spatial resolution of 130 µ m in the xy-plane and better than 300 µ m along the beam direction. A dedicated readout system was developed. Signals from the detector strips are processed by TIGER, a custom 64-channel ASIC that provides an analog charge readout via a fully digital output up to about 50 fC, less than 3 ns jitter. TIGER continuously streams over-threshold data in trigger-less mode to an FPGA-based readout module, called GEM Read Out Card, that organizes the incoming data by building the event packets when the trigger arrives. Two of the three layers are in operation in Beijing since January 2020 remotely controlled. Due to the pandemic situation the integration activity has been continued on a small-scale prototype. Recently, a test beam has been performed at CERN with the final electronics configuration. In this presentation, the general status of the CGEM-IT project will be presented with a particular focus on the results from the test beam data acquisition.

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“…With two out of three final detectors in a cosmic stand in Beijing operating remotely some preliminary reconstruction analyses have been performed [8].…”

Section: Resultsmentioning

confidence: 99%

Operation and readout of the CGEM Inner Tracker

Balossino

2022

Preprint

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“…The first two CGEM layers are manufactured in Italy and then shipped to Beĳing where the final setup is assembled with the full gas system, HV distribution and readout chain [4][5][6]. The gas mixture chosen is Argon-Isobutane (90:10) for good electron diffusion properties and larger ionization.…”

Section: Commissioningmentioning

confidence: 99%

Operation and readout of the CGEM inner tracker

Farinelli

2023

J. Inst.

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A recently approved ten-year extension of the BESIII experiment (IHEP, Beijing) motivated an upgrade program for both the accelerator and the detector. In particular, the current inner drift chamber is suffering from aging and the proposal is to replace it with a detector based on the cylindrical GEM technology. The CGEM inner tracker consists of three coaxial layers of triple GEM. The tracker is expected to restore efficiency, improve z-determination and secondary vertex position reconstruction with respect to the current inner tracker, with a resolution of 130 μm in the xy-plane and better than 300 μm along the beam direction. A dedicated readout system was developed for data acquisition. Signals from the detector strips are processed by TIGER, a custom 64-channel ASIC, designed using CMOS 110 nm UMC technology, that provides an analog charge readout via a fully digital output with a linear charge readout up to about 50 fC, less than 3 ns jitter. TIGER continuously streams over-threshold data in trigger-less mode to an FPGA-based readout module, called GEM Read Out Card, specifically designed for this system. The module configures the ASICs and organizes the incoming data by building the event packets when the trigger arrives. Two of the three layers have been in operation in Beijing since January 2020 remotely controlled.

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“…Layer 1 and Layer 2 are currently installed in a dedicated cosmic ray telescope setup at IHEP. The cosmic ray data taking has proven to be fundamental for continuing both the integration of the detector with its electronics and the development of the control and analysis software [8]. Since 2020, due to the recalling of the team of researchers working on-site, the detectors have been operated remotely.…”

Section: Operation Of the Cgem Detectorsmentioning

confidence: 99%

Operation of the new CGEM Inner Tracker for the Upgrade of the BESIII Experiment

Gramigna¹

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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A ten years extension of the data taking of BESIII experiment, recently approved, motivated an upgrade program both for the leptonic collider BEPCII and for some of the sub-detectors of the spectrometer. In particular, the current inner drift chamber is suffering from aging and the proposal is to replace it with a detector based on cylindrical GEM technology. The CGEM detector is made of three coaxial layers of triple GEM. The tracker is expected to restore the efficiency, to improve the z determination and the secondary vertex position reconstruction with respect to the current inner tracker, with a resolution of 130 µm in xy plane and better than 350 µm along the beam direction. A cosmic telescope instrumented with two out of three layers is in operation in Beijing since January 2020, remotely controlled by Italian groups due to the pandemic situation. In this presentation, the general status of the project will be presented with a particular focus on the preliminary results from the cosmic data taking and future plans.

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Preliminary results from the cosmic data taking of the BESIII cylindrical GEM detectors

Cited by 9 publications

References 8 publications

Operation and readout of the CGEM Inner Tracker

Operation and readout of the CGEM Inner Tracker

Operation and readout of the CGEM inner tracker

Operation of the new CGEM Inner Tracker for the Upgrade of the BESIII Experiment

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