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Author |
Miyagawa, P.S. et al; Bernabeu, P.; Lacasta, C.; Solaz, C.; Soldevila, U. |
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Title |
Analysis of the results from Quality Control tests performed on ATLAS18 Strip Sensors during on-going production |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1064 |
Issue |
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Pages |
169457 - 9pp |
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Keywords |
HL-LHC; ATLAS; ITk; Strip sensors |
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Abstract |
The ATLAS experiment will replace its existing Inner Detector with the new all -silicon Inner Tracker (ITk) to cope with the operating conditions of the forthcoming high -luminosity phase of the LHC (HL-LHC). The outer regions of the ITk will be instrumented with similar to 18000 ATLAS18 strip sensors fabricated by Hamamatsu Photonics K.K. (HPK). With the launch of full-scale sensor production in 2021, the ITk strip sensor community has undertaken quality control (QC) testing of these sensors to ensure compliance with mechanical and electrical specifications agreed with HPK. The testing is conducted at seven QC sites on each of the monthly deliveries of similar to 500 sensors. This contribution will give an overview of the QC procedures and analysis; the tests most likely to determine pass/fail for a sensor are IV, long-term leakage current stability, full strip test and visual inspection. The contribution will then present trends in the results and properties following completion of similar to 60% of production testing. It will also mention challenges overcome through collaborative efforts with HPK during the early phases of production. With less than 5% of sensors rejected by QC testing, the overall production quality has been very good. |
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Address |
[Miyagawa, P. S.; Beck, G. A.; Bevan, A. J.; Chen, Z.; Dawson, I.; Zenz, S. C.] Queen Mary Univ London, Particle Phys Res Ctr, GO Jones Bldg, Mile End Rd, London E14NS, England, Email: paul.miyagawa@cern.ch |
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Elsevier |
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0168-9002 |
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Notes |
WOS:001249611300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6158 |
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Author |
Bach, E. et al; Bernabeu, J.; Lacasta, C.; Solaz, C.; Soldevila, U. |
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Title |
Analysis of the quality assurance results from the initial part of production of the ATLAS18 ITK strip sensors |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1064 |
Issue |
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Pages |
169435 - 8pp |
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Keywords |
Silicon strip sensors; Parameter analysis |
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Abstract |
The production of strip sensors for the ATLAS Inner Tracker (ITk) started in 2021. Since then, a Quality Assurance (QA) program has been carried out continuously, by using specific test structures, in parallel to the Quality Control (QC) inspection of the sensors. The QA program consists of monitoring sensor-specific characteristics and the technological process variability, before and after the irradiation with gammas, neutrons, and protons. After two years, half of the full production volume has been reached and we present an analysis of the parameters measured as part of the QA process. The main devices used for QA purposes are miniature strip sensors, monitor diodes, and the ATLAS test chip, which contains several test structures. Such devices are tested by several sites across the collaboration depending on the type of samples (non-irradiated components or irradiated with protons, neutrons, or gammas). The parameters extracted from the tests are then uploaded to a database and analyzed by Python scripts. These parameters are mainly examined through histograms and timeevolution plots to obtain parameter distributions, production trends, and meaningful parameter-to-parameter correlations. The purpose of this analysis is to identify possible deviations in the fabrication or the sensor quality, changes in the behavior of the test equipment at different test sites, or possible variability in the irradiation processes. The conclusions extracted from the QA program have allowed test optimization, establishment of control limits for the parameters, and a better understanding of device properties and fabrication trends. In addition, any abnormal results prompt immediate feedback to a vendor. |
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Address |
[Bach, E.; Bhardwaj, A.; Crick, B.; Ullan, M.] CSIC, Inst Microelect Barcelona IMB CNM, Campus UAB Bellaterra, Barcelona 08193, Spain, Email: eric.bach@imb-cnm.csic.es |
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Elsevier |
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ISSN |
0168-9002 |
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Conference |
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Notes |
WOS:001252172700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6163 |
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Author |
Escrig, S. et al; Bernabeu, J.; Lacasta, C.; Solaz, C. |
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Title |
First test of energy response of the micro-vertex detection system for the WASA-FRS Experiments |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1064 |
Issue |
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Pages |
169392 - 4pp |
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Keywords |
Micro-strip silicon sensor; Tracking detector; Micro-vertex detector |
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Abstract |
The hypernuclei, which are nuclei that contain the quark s, have been studied for more than 50 years. Notwithstanding, the recent experiments using high-energy heavy-ion induced reactions have challenged their current understanding. The high multiplicity of particles generated in the reaction allows for the measurement of the interaction point of the primary beam with the target. Then, a micro-vertex detection system for the WASA-FRS Experiments has been developed. Several experimental tests have been performed with Sr-90 and Bi-207 beta sources and a 10-MeV proton beam at the CMAM tandem accelerator, and their results are reported. |
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Address |
[Escrig, S.; Rappold, C.; Ruiz, D. Fernandez; Borge, M. J. Garcia; Tavora, V. Garcia; Aguirre, A. Nerio; Martinez, A. Perea; Sanchez-Prieto, J.; Tengblad, O.] CSIC, IEM, Madrid 28006, Spain, Email: samuel.escrig@csic.es |
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Elsevier |
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English |
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ISSN |
0168-9002 |
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Notes |
WOS:001301017700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6242 |
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Author |
Belle II VTX Collaboration (Babeluk, M. et al).; Marinas, C.; Mazorra de Cos, J. |
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Title |
The DMAPS upgrade of the Belle II vertex detector |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1064 |
Issue |
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Pages |
169428 - 5pp |
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Keywords |
Belle II; Belle II VTX; CMOS Pixel Sensor; Depleted Monolithic Active Pixel Sensor; DMAPS; Vertex detector; Radiation damage; Particle tracking detectors; Radiation-hard detectors |
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Abstract |
The Belle II experiment at KEK in Japan considers an upgrade for the vertex detector system in line with the accelerator upgrade for higher luminosity at long shutdown 2 planned for 2028. One proposal for the upgrade of the vertex detector called VTX aims to improve background robustness and reduce occupancy using small and fast pixels. VTX accommodates the OBELIX depleted monolithic active CMOS pixel sensor (DMAPS) on all five proposed layers. OBELIX is specifically developed for the VTX application and based on the TJ-Monopix2 chip initially developed to meet the requirements of the outer layers of the ATLAS inner tracker (ITk). This paper will review recent tests of the TJ-Monopix2 chip as well as various design aspects of the OBELIX-1 chip currently under development. |
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Address |
[Babeluk, M.; Bergauer, T.; Finck, C.; Irmler, C.] Austrian Acad Sci, Inst High Energy Phys, A-1050 Vienna, Austria, Email: maximilian.babeluk@oeaw.ac.at |
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Elsevier |
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English |
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0168-9002 |
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Notes |
WOS:001304265000001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6246 |
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Author |
Babeluk, M. et al; Lacasta, C.; Marinas, C.; Mazorra de Cos, J.; Vobbilisetti, V. |
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Title |
The OBELIX chip for the Belle II VTX upgrade |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1067 |
Issue |
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Pages |
169659 - 3pp |
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Keywords |
Belle II; Belle II VTX; CMOS Pixel Sensor; Depleted Monolithic Active Pixel Sensor; DMAPS; Vertex detector; Particle tracking detectors; Radiation-hard detectors; OBELIX; Trigger |
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Abstract |
The OBELIX depleted monolithic active CMOS pixel sensor (DMAPS) is currently developed for the upgrade of the vertex detector of the Belle II experiment located at Tsukuba/Japan. The pixel matrix of OBELIX is inherited from the TJ-Monopix2 chip, but the periphery includes additional features to improve performance and allow the integration into a larger detector system. The new features include a trigger unit to process trigger signals, a precision timing module and a possibility to transmit low granularity hit information with low latency to contribute to the Belle II trigger. Additionally, low dropout voltage regulators and an ADC to monitor power consumption and substrate temperature is developed. This paper will focus on the trigger contribution capabilities of the OBELIX chip. |
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Address |
[Babeluk, M.; Bergauer, T.; Irmler, C.; Kaliyar, A. B.; Pilsl, B.; Schwanda, C.] Austrian Acad Sci, Inst High Energy Phys, Nikolsdorfer Gasse 18, Vienna, Austria, Email: maximilian.babeluk@oeaw.ac.at |
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Elsevier |
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English |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0168-9002 |
ISBN |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:001296113100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6248 |
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Author |
Belle-II DEPFET and PXD Collaborations (Ahlburg, P. et al); Marinas, C. |
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Title |
The new and complete Belle II DEPFET pixel detector: Commissioning and previous operational experience |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1068 |
Issue |
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Pages |
169763 - 6pp |
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Keywords |
Belle II; DEPFET; Pixel detector; Vertex detector |
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Abstract |
The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, has collected e+e- + e – collision data between 2019 and 2022. After reaching a record-breaking instantaneous luminosity of 4.71x1034 . 71x10 34 cm -2 s -1 and recording a dataset corresponding to 424 fb -1 , it completed its first planned long shutdown phase in December 2023. Aside from upgrades of the collider and detector maintenance, the shutdown was used for the installation of the two-layer Pixel VerteX Detector (PXD). As the innermost sub-detector, multiple scattering effects need to be reduced. PXD utilizes the Depleted P-channel Field Effect Transistor (DEPFET) technology, allowing for a material budget of 0.21% X0 0 per layer. Each of the tracker's 40 modules consists of an array of 250x768 pixels with a pitch ranging from 50 μmx 55 μm for the inner to 85 μmx 55 μm for the outer layer yielding high gain and high signal-to-noise ratio while retaining about 99% hit efficiency. This article discusses the experience of the 4-year operation of the previous single-layer PXD in harsh background conditions as well as commissioning and testing of the fully-populated PXD2 during Long Shutdown 1. |
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Address |
[Ahlburg, P.; Bernlochner, F.; Dingfelder, J.; Farkas, R.; Giakoustidis, G.; Khan, M.; Krueger, H.; Paschen, B.; Schmitz, J.; Wermes, N.] Univ Bonn, D-53115 Bonn, Germany, Email: jannes.schmitz@uni-bonn.de |
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Publisher |
Elsevier |
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English |
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ISSN |
0168-9002 |
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Expedition |
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Conference |
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Notes |
WOS:001306604900001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6252 |
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Author |
Punzi, G.; Baldini, W.; Bassi, G.; Contu, A.; Fantechi, R.; He, J.B.; Jashal, B.K.; Kotriakhova, S.; Lazzari, F.; Martinelli, M.; Mendoza, D.; Morello, M.J.; Oyanguren, A.; Pica, L.; Shi, Q.; Terzuoli, F.; Tuci, G.; Xu, A.; Zhuo, J.H. |
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Title |
Detector-embedded reconstruction of complex primitives using FPGAs |
Type |
Journal Article |
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Year |
2024 |
Publication |
Nuclear Instruments & Methods in Physics Research A |
Abbreviated Journal |
Nucl. Instrum. Methods Phys. Res. A |
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Volume |
1069 |
Issue |
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Pages |
169782 - 4pp |
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Keywords |
DAQ; FPGA; Trigger; LHCb |
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Abstract |
The slowdown of Moore's law and the growing requirements of future HEP experiments with ever-increasing data rates pose important computational challenges for data reconstruction and trigger systems, encouraging the exploration of new computing methodologies. In this work we discuss a FPGA-based tracking system, relying on a massively parallel pattern recognition approach, inspired by the processing of visual images by the natural brain (“retina architecture”). This method allows a large efficiency of utilisation of the hardware, low power consumption and very low latencies. Based on this approach, a device has been designed within the LHCb Upgrade-II project, with the goal of performing track reconstruction in the forward acceptance region in real-time during the upcoming Run 4 of the LHC. This innovative device will perform track reconstruction before the event-building, in a short enough time to provide pre-reconstructed tracks (“primitives”) transparently to the processor farm, as if they had been generated directly by the detector. This allows significant savings in higher-level computing resources, enabling handling higher luminosities than otherwise possible. The feasibility of the project is backed up by the results of tests performed on a realistic hardware prototype, that has been opportunistically processing actual LHCb data in parallel with the regular DAQ in the LHC Run 3. |
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Address |
[Baldini, Wander; Kotriakhova, Sofia] INFN, Sez Ferrara, Ferrara, Italy, Email: giovanni.punzi@cern.ch |
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Elsevier |
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English |
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ISSN |
0168-9002 |
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Notes |
WOS:001309343100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6253 |
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Author |
Martinez Torres, A.; Khemchandani, K.P.; Roca, L.; Oset, E. |
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Title |
Few-body systems consisting of mesons |
Type |
Journal Article |
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Year |
2020 |
Publication |
Few-Body Systems |
Abbreviated Journal |
Few-Body Syst. |
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Volume |
61 |
Issue |
4 |
Pages |
35 - 16pp |
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Keywords |
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Abstract |
We present a work which is meant to inspire the few-body practitioners to venture into the study of new, more exotic, systems and to hadron physicists, working mostly on two-body problems, to move in the direction of studying related few-body systems. For this purpose we devote the discussions in the introduction to show how the input two-body amplitudes can be easily obtained using techniques of the chiral unitary theory, or its extensions to the heavy quark sector. We then briefly explain how these amplitudes can be used to solve the Faddeev equations or a simpler version obtained by treating the three-body scattering as that of a particle on a fixed center. Further, we give some examples of the results obtained by studying systems involving mesons. We have also addressed the field of many meson systems, which is currently almost unexplored, but for which we envisage a bright future. Finally, we give a complete list of works dealing with unconventional few-body systems involving one or several mesons, summarizing in this way the findings on the topic, and providing a motivation for those willing to investigate such systems. |
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Address |
[Martinez Torres, A.] Univ Sao Paulo, Inst Fis, BR-05389970 Sao Paulo, Brazil, Email: amartine@if.usp.br; |
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Publisher |
Springer Wien |
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English |
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Abbreviated Series Title |
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Series Volume |
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Edition |
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ISSN |
0177-7963 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:000572646500001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4546 |
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Author |
Ikeno, N.; Toledo, G.; Liang, W.H.; Oset, E. |
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Title |
Consistency of the Molecular Picture of Omega(2012) with the Latest Belle Results |
Type |
Journal Article |
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Year |
2023 |
Publication |
Few-Body Systems |
Abbreviated Journal |
Few-Body Syst. |
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Volume |
64 |
Issue |
3 |
Pages |
55 - 6pp |
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Keywords |
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Abstract |
We report the results of the research on the Omega(2012) state based on themolecular picture and discuss the consistency of the picture with the Belle experimental results. We study the interaction of the (K) over bar Xi*, eta Omega(s-wave) and (K) over bar Xi(d-wave) channels within a coupled channel unitary approach, and obtain the mass and the width of the Omega(2012) state and the decay ratio R-Xi(K) over bar(Xi pi(K) over bar). We also present a mechanism for Omega c -> pi(+)Omega(2012) production through an external emission Cabibbo favoredweak decay mode, where the Omega(2012) is dynamically generated from the above interaction. We find that the results obtained by the molecular picture are consistent with all Belle experimental data. |
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Address |
[Ikeno, Natsumi] Tottori Univ, Dept Agr Life & Environm Sci, Tottori 6808551, Japan, Email: ikeno@tottori-u.ac.jp |
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Publisher |
Springer Wien |
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English |
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ISSN |
0177-7963 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:001022421000001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5586 |
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Author |
Richard, J.M.; Valcarce, A.; Vijande, J. |
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Title |
Resonances in the Quark Model |
Type |
Journal Article |
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Year |
2024 |
Publication |
Few-Body Systems |
Abbreviated Journal |
Few-Body Syst. |
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Volume |
65 |
Issue |
3 |
Pages |
71 - 11pp |
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Keywords |
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Abstract |
A discussion is presented of the estimates of the energy and width of resonances in constituent models, with focus on the tetraquark states containing heavy quarks. |
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Address |
[Richard, Jean-Marc] Univ Claude Bernard Lyon 1, Inst Phys Infinis Lyon 2, CNRS, IN2P3, CNRS-IN2P3,4 rue Enr Fermi, F-69622 Villeurbanne, France, Email: j-m.richard@ip2i.in2p3.fr |
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Publisher |
Springer Wien |
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English |
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ISSN |
0177-7963 |
ISBN |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:001260738300001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6180 |
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