Lakshay Dheer, Liang Z. Tan, S. A. Lyon, Thomas Schenkel, Sinéad M. Griffin
While there is much indirect evidence for the existence of dark matter (DM), to date it has evaded detection. Current efforts focus on DM masses over $sim$GeV -- to push the sensitivity of DM searches to lower masses, new DM targets and detection schemes are needed. In this work, we focus on the latter - a novel detection scheme recently proposed to detect ~10-100 meV phonons in polar target materials. Previous work showed that well-motivated models of DM can interact with polar semiconductors to produce an athermal population of phonons. This new sensing scheme proposes that these phonons then facilitate quantum evaporation of $^3$He from a van der Waals film deposited on the target material. However, a fundamental understanding of the underlying process is still unclear, with several uncertainties related to the precise rate of evaporation and how it can be controlled. In this work, we use textit{ab initio} density functional theory (DFT) calculations to compare the adsorption energies of helium atoms on a polar target material, sodium iodide (NaI), to understand the underlying evaporation physics. We explore the role of surface termination, monolayer coverage and elemental species on the rate of He evaporation from the target material. Using this, we discuss the optimal target features for He-evaporation experiments and their range of tunability through chemical and physical modifications such as applied field and surface termination.
{"title":"Factors influencing quantum evaporation of helium from polar semiconductors from first principles","authors":"Lakshay Dheer, Liang Z. Tan, S. A. Lyon, Thomas Schenkel, Sinéad M. Griffin","doi":"arxiv-2409.03857","DOIUrl":"https://doi.org/arxiv-2409.03857","url":null,"abstract":"While there is much indirect evidence for the existence of dark matter (DM),\u0000to date it has evaded detection. Current efforts focus on DM masses over\u0000$sim$GeV -- to push the sensitivity of DM searches to lower masses, new DM\u0000targets and detection schemes are needed. In this work, we focus on the latter\u0000- a novel detection scheme recently proposed to detect ~10-100 meV phonons in\u0000polar target materials. Previous work showed that well-motivated models of DM\u0000can interact with polar semiconductors to produce an athermal population of\u0000phonons. This new sensing scheme proposes that these phonons then facilitate\u0000quantum evaporation of $^3$He from a van der Waals film deposited on the target\u0000material. However, a fundamental understanding of the underlying process is\u0000still unclear, with several uncertainties related to the precise rate of\u0000evaporation and how it can be controlled. In this work, we use textit{ab\u0000initio} density functional theory (DFT) calculations to compare the adsorption\u0000energies of helium atoms on a polar target material, sodium iodide (NaI), to\u0000understand the underlying evaporation physics. We explore the role of surface\u0000termination, monolayer coverage and elemental species on the rate of He\u0000evaporation from the target material. Using this, we discuss the optimal target\u0000features for He-evaporation experiments and their range of tunability through\u0000chemical and physical modifications such as applied field and surface\u0000termination.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andrew Gentry, Maurizio Boscardin, Martin Hoeferkamp, Marco Povoli, Sally Seidel, Jiahe Si, Gian-Franco Dalla Betta
Characterization measurements of $25 mathrm{mu m} times 25 mathrm{mu m}$ pitch 3D silicon sensors are presented, for devices with active thickness of $150mu$m. Evidence of charge multiplication caused by impact ionization below the breakdown voltage is observed. Small-pitch 3D silicon sensors have potential as high precision 4D tracking detectors that are also able to withstand radiation fluences beyond $mathrm{10^{16} n_{eq}/cm^2}$, for use at future facilities such as the High-Luminosity Large Hadron Collider, the Electron-Ion Collider, and the Future Circular Collider. Characteristics of these devices are compared to those for similar sensors of pitch $50 mathrm{mu m} times 50 mathrm{mu m}$, showing comparable charge collection at low voltage, and acceptable leakage current, depletion voltage, breakdown voltage, and capacitance despite the extremely small cell size. The unirradiated $25 mathrm{mu m} times 25 mathrm{mu m}$ sensors exhibit charge multiplication above about 90 V reverse bias, while, as predicted, no multiplication is observed in the $50 mathrm{mu m} times 50 mathrm{mu m}$ sensors below their breakdown voltage. The maximum gain observed below breakdown is 1.33.
{"title":"Evidence of Charge Multiplication in Thin $25 mathrm{μm} times 25 mathrm{μm}$ Pitch 3D Silicon Sensors","authors":"Andrew Gentry, Maurizio Boscardin, Martin Hoeferkamp, Marco Povoli, Sally Seidel, Jiahe Si, Gian-Franco Dalla Betta","doi":"arxiv-2409.03909","DOIUrl":"https://doi.org/arxiv-2409.03909","url":null,"abstract":"Characterization measurements of $25 mathrm{mu m} times 25 mathrm{mu m}$\u0000pitch 3D silicon sensors are presented, for devices with active thickness of\u0000$150mu$m. Evidence of charge multiplication caused by impact ionization below\u0000the breakdown voltage is observed. Small-pitch 3D silicon sensors have\u0000potential as high precision 4D tracking detectors that are also able to\u0000withstand radiation fluences beyond $mathrm{10^{16} n_{eq}/cm^2}$, for use at\u0000future facilities such as the High-Luminosity Large Hadron Collider, the\u0000Electron-Ion Collider, and the Future Circular Collider. Characteristics of\u0000these devices are compared to those for similar sensors of pitch $50\u0000mathrm{mu m} times 50 mathrm{mu m}$, showing comparable charge collection\u0000at low voltage, and acceptable leakage current, depletion voltage, breakdown\u0000voltage, and capacitance despite the extremely small cell size. The\u0000unirradiated $25 mathrm{mu m} times 25 mathrm{mu m}$ sensors exhibit\u0000charge multiplication above about 90 V reverse bias, while, as predicted, no\u0000multiplication is observed in the $50 mathrm{mu m} times 50 mathrm{mu m}$\u0000sensors below their breakdown voltage. The maximum gain observed below\u0000breakdown is 1.33.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wen-Hao LiPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei, Chuan YuePurple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Yong-Qiang ZhangPurple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Jian-Hua GuoPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei, Qiang YuanPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei
The DArk Matter Particle Explorer (DAMPE) is a satellite-borne particle detector for measurements of high-energy cosmic rays and {gamma}-rays. DAMPE has been operating smoothly in space for more than 8 years since launch on December 17, 2015. The trigger logic of DAMPE is designed according to the deposited energy information recorded by the calorimeter. The precise calibration of the trigger thresholds and their long-term evolutions are very important for the scientific analysis of DAMPE. In this work, we develop a new method for the threshold calibration, considering the influence from the electronic noise, and obtain the long-term evolutions of the trigger thresholds. The average increase rate of the trigger thresholds for the first 4 layers of the calorimeter is found to be about 0.9% per year, resulting in variations of the high-energy trigger efficiency of cosmic ray electrons by about -5% per year at 2 GeV and less than about -0.05% above 30 GeV.
{"title":"On-orbit calibration and long-term performance of the DAMPE trigger system","authors":"Wen-Hao LiPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei, Chuan YuePurple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Yong-Qiang ZhangPurple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Jian-Hua GuoPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei, Qiang YuanPurple Mountain Observatory, Chinese Academy of Sciences, NanjingSchool of Astronomy and Space Science, University of Science and Technology of China, Hefei","doi":"arxiv-2409.03352","DOIUrl":"https://doi.org/arxiv-2409.03352","url":null,"abstract":"The DArk Matter Particle Explorer (DAMPE) is a satellite-borne particle\u0000detector for measurements of high-energy cosmic rays and {gamma}-rays. DAMPE\u0000has been operating smoothly in space for more than 8 years since launch on\u0000December 17, 2015. The trigger logic of DAMPE is designed according to the\u0000deposited energy information recorded by the calorimeter. The precise\u0000calibration of the trigger thresholds and their long-term evolutions are very\u0000important for the scientific analysis of DAMPE. In this work, we develop a new\u0000method for the threshold calibration, considering the influence from the\u0000electronic noise, and obtain the long-term evolutions of the trigger\u0000thresholds. The average increase rate of the trigger thresholds for the first 4\u0000layers of the calorimeter is found to be about 0.9% per year, resulting in\u0000variations of the high-energy trigger efficiency of cosmic ray electrons by\u0000about -5% per year at 2 GeV and less than about -0.05% above 30 GeV.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nicholas Cutsail, Johan Vonk, Vivek Singh, Yury G Kolomensky
The coherent conversion of a muon to an electron in a nuclear field has been one of the most powerful methods to search for Charged Lepton Flavor Violation (CLFV). Recent advancements have significantly enhanced the sensitivity of $mu rightarrow e$ searches, primarily driven by advancements in muon beamline design and low-mass tracking detectors, which afford exceptional momentum resolution. Nevertheless, the performance of these detectors is inherently limited by electron scattering and energy loss within detector materials. To overcome these inevitable limitations, we propose a novel holographic track reconstruction leveraging synchrotron radiation emitted by electrons. Similar to cyclotron radiation emission spectroscopy (CRES) which has demonstrated outstanding energy resolutions for low-energy electrons, our technique relies on a precision measurement of cyclotron frequency, but in a regime where photons are emitted stochastically and are projected onto a 2-dimensional inner surface of a solenoidal magnet. We outline the concept of such a massless holographic tracker and feasibility of employing this innovative detection strategy for $mu rightarrow e$ conversion. We also address pertinent limitations and challenges inherent to the method.
{"title":"Measuring Electron Energy in Muon-to-Electron Conversion using Holographic Synchrotron Radiation Emission Spectroscopy","authors":"Nicholas Cutsail, Johan Vonk, Vivek Singh, Yury G Kolomensky","doi":"arxiv-2409.02878","DOIUrl":"https://doi.org/arxiv-2409.02878","url":null,"abstract":"The coherent conversion of a muon to an electron in a nuclear field has been\u0000one of the most powerful methods to search for Charged Lepton Flavor Violation\u0000(CLFV). Recent advancements have significantly enhanced the sensitivity of $mu\u0000rightarrow e$ searches, primarily driven by advancements in muon beamline\u0000design and low-mass tracking detectors, which afford exceptional momentum\u0000resolution. Nevertheless, the performance of these detectors is inherently\u0000limited by electron scattering and energy loss within detector materials. To\u0000overcome these inevitable limitations, we propose a novel holographic track\u0000reconstruction leveraging synchrotron radiation emitted by electrons. Similar\u0000to cyclotron radiation emission spectroscopy (CRES) which has demonstrated\u0000outstanding energy resolutions for low-energy electrons, our technique relies\u0000on a precision measurement of cyclotron frequency, but in a regime where\u0000photons are emitted stochastically and are projected onto a 2-dimensional inner\u0000surface of a solenoidal magnet. We outline the concept of such a massless\u0000holographic tracker and feasibility of employing this innovative detection\u0000strategy for $mu rightarrow e$ conversion. We also address pertinent\u0000limitations and challenges inherent to the method.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emma E. Wollman, Jason P. Allmaras, Andrew D. Beyer, Boris Korzh, Marcus C. Runyan, Lautaro Narváez, William H. Farr, Francesco Marsili, Ryan M. Briggs, Gregory J. Miles, Matthew D. Shaw
We report on a free-space-coupled superconducting nanowire single-photon detector array developed for NASA's Deep Space Optical Communications project (DSOC). The array serves as the downlink detector for DSOC's primary ground receiver terminal located at Palomar Observatory's 200-inch Hale Telescope. The 64-pixel WSi array comprises four quadrants of 16 co-wound pixels covering a 320 micron diameter active area and embedded in an optical stack. The detector system also includes cryogenic optics for filtering and focusing the downlink signal and electronics for biasing the array and amplifying the output pulses. The detector system exhibits a peak system detection efficiency of 76% at 1550 nm, a background-limited false count rate as low as 3.7 kcps across the array, timing jitter less than 120 ps FWHM, and a maximum count rate of ~ 1 Gcps.
{"title":"An SNSPD-based detector system for NASA's Deep Space Optical Communications project","authors":"Emma E. Wollman, Jason P. Allmaras, Andrew D. Beyer, Boris Korzh, Marcus C. Runyan, Lautaro Narváez, William H. Farr, Francesco Marsili, Ryan M. Briggs, Gregory J. Miles, Matthew D. Shaw","doi":"arxiv-2409.02356","DOIUrl":"https://doi.org/arxiv-2409.02356","url":null,"abstract":"We report on a free-space-coupled superconducting nanowire single-photon\u0000detector array developed for NASA's Deep Space Optical Communications project\u0000(DSOC). The array serves as the downlink detector for DSOC's primary ground\u0000receiver terminal located at Palomar Observatory's 200-inch Hale Telescope. The\u000064-pixel WSi array comprises four quadrants of 16 co-wound pixels covering a\u0000320 micron diameter active area and embedded in an optical stack. The detector\u0000system also includes cryogenic optics for filtering and focusing the downlink\u0000signal and electronics for biasing the array and amplifying the output pulses.\u0000The detector system exhibits a peak system detection efficiency of 76% at 1550\u0000nm, a background-limited false count rate as low as 3.7 kcps across the array,\u0000timing jitter less than 120 ps FWHM, and a maximum count rate of ~ 1 Gcps.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saurabh M. Das, Patrick Harrison, Srikakulapu Kiranbabu, Xuyang Zhou, Wolfgang Ludwig, Edgar F. Rauch, Michael Herbig, Christian H. Liebscher
Grain boundaries are dominant imperfections in nanocrystalline materials that form a complex 3-dimensional (3D) network. Solute segregation to grain boundaries is strongly coupled to the grain boundary character, which governs the stability and macroscopic properties of nanostructured materials. Here, we develop a 3-dimensional transmission electron microscopy and atom probe tomography correlation framework to retrieve the grain boundary character and composition at the highest spatial resolution and chemical sensitivity by correlating four-dimensional scanning precession electron diffraction tomography (4D-SPED) and atom probe tomography (APT) on the same sample. We obtain the 3D grain boundary habit plane network and explore the preferential segregation of Cu and Si in a nanocrystalline Ni-W alloy. The correlation of structural and compositional information reveals that Cu segregates predominantly along high angle grain boundaries and incoherent twin boundaries, whereas Si segregation to low angle and incommensurate grain boundaries is observed. The novel full 3D correlative approach employed in this work opens up new possibilities to explore the 3D crystallographic and compositional nature of nanomaterials. This lays the foundation for both probing the true 3D structure-chemistry at the sub-nanometer scale and, consequentially, tailoring the macroscopic properties of advanced nanomaterials.
晶界是纳米晶体材料中的主要缺陷，它形成了复杂的三维（3D）网络。溶质在晶界的偏析与晶界特性密切相关，而晶界特性决定了纳米结构材料的稳定性和宏观特性。在此，我们开发了一种三维透射电子显微镜和原子探针层析成像相关框架，通过在同一样品上进行四维扫描前驱电子衍射层析成像（4D-SPED）和原子探针层析成像（APT）的相关分析，以最高的空间分辨率和化学灵敏度检索晶界特征和组成。我们获得了三维晶界习性面网络，并探索了纳米晶 Ni-W 合金中 Cu 和 Si 的优先聚集。结构和成分信息的相关性揭示了铜主要沿着高角度晶界和不一致的孪晶边界偏析，而硅则偏析到低角度和不一致的晶界。这项工作中采用的新型全三维关联方法为探索纳米材料的三维晶体学和成分性质开辟了新的可能性。这为在亚纳米尺度上探测真正的三维结构-化学性质奠定了基础，从而为定制先进纳米材料的宏观特性奠定了基础。
{"title":"Correlating grain boundary character and composition in 3-dimensions using 4D-scanning precession electron diffraction and atom probe tomography","authors":"Saurabh M. Das, Patrick Harrison, Srikakulapu Kiranbabu, Xuyang Zhou, Wolfgang Ludwig, Edgar F. Rauch, Michael Herbig, Christian H. Liebscher","doi":"arxiv-2409.01753","DOIUrl":"https://doi.org/arxiv-2409.01753","url":null,"abstract":"Grain boundaries are dominant imperfections in nanocrystalline materials that\u0000form a complex 3-dimensional (3D) network. Solute segregation to grain\u0000boundaries is strongly coupled to the grain boundary character, which governs\u0000the stability and macroscopic properties of nanostructured materials. Here, we\u0000develop a 3-dimensional transmission electron microscopy and atom probe\u0000tomography correlation framework to retrieve the grain boundary character and\u0000composition at the highest spatial resolution and chemical sensitivity by\u0000correlating four-dimensional scanning precession electron diffraction\u0000tomography (4D-SPED) and atom probe tomography (APT) on the same sample. We\u0000obtain the 3D grain boundary habit plane network and explore the preferential\u0000segregation of Cu and Si in a nanocrystalline Ni-W alloy. The correlation of\u0000structural and compositional information reveals that Cu segregates\u0000predominantly along high angle grain boundaries and incoherent twin boundaries,\u0000whereas Si segregation to low angle and incommensurate grain boundaries is\u0000observed. The novel full 3D correlative approach employed in this work opens up\u0000new possibilities to explore the 3D crystallographic and compositional nature\u0000of nanomaterials. This lays the foundation for both probing the true 3D\u0000structure-chemistry at the sub-nanometer scale and, consequentially, tailoring\u0000the macroscopic properties of advanced nanomaterials.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Sharma, Y. Li, M. K. Prasad, W. L. Ho, S. T. Chu, I. V. Borzenets
Micro-ring resonators (MRRs) "trap" incoming light, and therefore, have been shown to achieve extremely high local intensities of light. Thus, they can be used to facilitate highly non-linear optical signals. By embedding materials that host non-linear optical processes inside the MRR, we expect to observe an enhancement in the strength of the non-linear optical signal. This concept is demonstrated here by extracting the Raman signature of graphene that is placed inside a MRR. A highly doped silica MRR which features an optical bus waveguide coupled to a loop (ring) tuned to near-infrared wavelengths is used. Raman signal with an excitation wavelength of 522 nm via third harmonic generation inside the MRR is observed. Higher order Raman signal of the embedded graphene at the 1597.6 nm excitation wavelength is also observed. This work demonstrates the feasibility of the MRR as a non-linear signal enhancer using novel MRR device setups.
{"title":"Raman signal enhancement via a microring resonator","authors":"A. Sharma, Y. Li, M. K. Prasad, W. L. Ho, S. T. Chu, I. V. Borzenets","doi":"arxiv-2409.01967","DOIUrl":"https://doi.org/arxiv-2409.01967","url":null,"abstract":"Micro-ring resonators (MRRs) \"trap\" incoming light, and therefore, have been\u0000shown to achieve extremely high local intensities of light. Thus, they can be\u0000used to facilitate highly non-linear optical signals. By embedding materials\u0000that host non-linear optical processes inside the MRR, we expect to observe an\u0000enhancement in the strength of the non-linear optical signal. This concept is\u0000demonstrated here by extracting the Raman signature of graphene that is placed\u0000inside a MRR. A highly doped silica MRR which features an optical bus waveguide\u0000coupled to a loop (ring) tuned to near-infrared wavelengths is used. Raman\u0000signal with an excitation wavelength of 522 nm via third harmonic generation\u0000inside the MRR is observed. Higher order Raman signal of the embedded graphene\u0000at the 1597.6 nm excitation wavelength is also observed. This work demonstrates\u0000the feasibility of the MRR as a non-linear signal enhancer using novel MRR\u0000device setups.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"279 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
During Large Hadron Collider (LHC) Long Shutdown 3 (LS3) (2026-28), the ALICE experiment is replacing its inner-most three tracking layers by a new detector, Inner Tracking System 3. It will be based on newly developed wafer-scale monolithic active pixel sensors, which are bent into truly cylindrical layers and held in place by light mechanics made from carbon foam. Unprecedented low values of material budget (per layer) and closeness to interaction point (19 mm) lead to a factor two improvement in pointing resolutions from very low $p_text{T}$ (O(100MeV/$c$)), achieving, for example, 20 ${mu}$m and 15 ${mu}$m in the transversal and longitudinal directions, respectively, for 1 GeV/c primary charged pions. After a successful R&D phase 2019-2023, which demonstrated the feasibility of this innovational detector, the final sensor and mechanics are being developed right now. This contribution will briefly review the conceptual design and the main R&D achievements, as well as the current activities and road to completion and installation. It concludes with a projection of the improved physics performance, in particular for heavy-flavour hadrons, as well as for thermal dielectrons, that will come into reach with this new detector installed.
{"title":"The ITS3 detector and physics reach of the LS3 ALICE Upgrade","authors":"Chun-Zheng Wangfor the ALICE Collaboration","doi":"arxiv-2409.01866","DOIUrl":"https://doi.org/arxiv-2409.01866","url":null,"abstract":"During Large Hadron Collider (LHC) Long Shutdown 3 (LS3) (2026-28), the ALICE\u0000experiment is replacing its inner-most three tracking layers by a new detector,\u0000Inner Tracking System 3. It will be based on newly developed wafer-scale\u0000monolithic active pixel sensors, which are bent into truly cylindrical layers\u0000and held in place by light mechanics made from carbon foam. Unprecedented low\u0000values of material budget (per layer) and closeness to interaction point (19\u0000mm) lead to a factor two improvement in pointing resolutions from very low\u0000$p_text{T}$ (O(100MeV/$c$)), achieving, for example, 20 ${mu}$m and 15\u0000${mu}$m in the transversal and longitudinal directions, respectively, for 1\u0000GeV/c primary charged pions. After a successful R&D phase 2019-2023, which\u0000demonstrated the feasibility of this innovational detector, the final sensor\u0000and mechanics are being developed right now. This contribution will briefly\u0000review the conceptual design and the main R&D achievements, as well as the\u0000current activities and road to completion and installation. It concludes with a\u0000projection of the improved physics performance, in particular for heavy-flavour\u0000hadrons, as well as for thermal dielectrons, that will come into reach with\u0000this new detector installed.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jakub Mnich, Johannes Kunsch, Matthias Budden, Thomas Gebert, Marco Schossig, Jarosław Sotor, Łukasz A. Sterczewski
Fourier-transform infrared spectroscopy (FTIR) has matured into a versatile technique with relevance for environmental monitoring, pharmaceutical research, and food safety applications. However, compared to other spectroscopic methods, it experiences slower progress in terms of power optimization, miniaturization, and adoption by industry. To overcome this limitation, we developed an ultra-broadband room-temperature FTIR instrument relying on commercially available components that offers a spectral coverage from 1.6 $mu$m to 31 $mu$m (9.7-190 THz) without changing optics at a single-Watt-level of electrical power consumption. To demonstrate the capabilities of the instrument, we measured atmospheric species in multiple spectral regions with better than 1.5 cm$^{-1}$ resolution.
{"title":"Ultra-broadband room-temperature Fourier transform spectrometer with watt-level power consumption","authors":"Jakub Mnich, Johannes Kunsch, Matthias Budden, Thomas Gebert, Marco Schossig, Jarosław Sotor, Łukasz A. Sterczewski","doi":"arxiv-2409.01875","DOIUrl":"https://doi.org/arxiv-2409.01875","url":null,"abstract":"Fourier-transform infrared spectroscopy (FTIR) has matured into a versatile\u0000technique with relevance for environmental monitoring, pharmaceutical research,\u0000and food safety applications. However, compared to other spectroscopic methods,\u0000it experiences slower progress in terms of power optimization, miniaturization,\u0000and adoption by industry. To overcome this limitation, we developed an\u0000ultra-broadband room-temperature FTIR instrument relying on commercially\u0000available components that offers a spectral coverage from 1.6 $mu$m to 31\u0000$mu$m (9.7-190 THz) without changing optics at a single-Watt-level of\u0000electrical power consumption. To demonstrate the capabilities of the\u0000instrument, we measured atmospheric species in multiple spectral regions with\u0000better than 1.5 cm$^{-1}$ resolution.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Volponi, J. Zieliński, T. Rauschendorfer, S. Huck, R. Caravita, M. Auzins, B. Bergmann, P. Burian, R. S. Brusa, A. Camper, F. Castelli, G. Cerchiari, R. Ciuryło, G. Consolati, M. Doser, K. Eliaszuk, A. Giszczak, L. T. Glöggler, Ł. Graczykowski, M. Grosbart, F. Guatieri, N. Gusakova, F. Gustafsson, S. Haider, M. A. Janik, T. Januszek, G. Kasprowicz, G. Khatri, Ł. Kłosowski, G. Kornakov, V. Krumins, L. Lappo, A. Linek, J. Malamant, S. Mariazzi, L. Penasa, V. Petracek, M. Piwiński, S. Pospisil, L. Povolo, F. Prelz, S. A. Rangwala, B. S. Rawat, B. Rienäcker, V. Rodin, O. M. Røhne, H. Sandaker, P. Smolyanskiy, T. Sowiński, D. Tefelski, T. Vafeiadis, C. P. Welsch, T. Wolz, M. Zawada, N. Zurlo
Modern physics experiments are frequently very complex, relying on multiple simultaneous events to happen in order to obtain the desired result. The experiment control system plays a central role in orchestrating the measurement setup: However, its development is often treated as secondary with respect to the hardware, its importance becoming evident only during the operational phase. Therefore, the AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) collaboration has created a framework for easily coding control systems, specifically targeting atomic, quantum, and antimatter experiments. This framework, called Total Automation of LabVIEW Operations for Science (TALOS), unifies all the machines of the experiment in a single entity, thus enabling complex high-level decisions to be taken, and it is constituted by separate modules, called MicroServices, that run concurrently and asynchronously. This enhances the stability and reproducibility of the system while allowing for continuous integration and testing while the control system is running. The system demonstrated high stability and reproducibility, running completely unsupervised during the night and weekends of the data-taking campaigns. The results demonstrate the suitability of TALOS to manage an entire physics experiment in full autonomy: being open-source, experiments other than the AEgIS experiment can benefit from it.
{"title":"TALOS (Total Automation of LabVIEW Operations for Science): A framework for autonomous control systems for complex experiments","authors":"M. Volponi, J. Zieliński, T. Rauschendorfer, S. Huck, R. Caravita, M. Auzins, B. Bergmann, P. Burian, R. S. Brusa, A. Camper, F. Castelli, G. Cerchiari, R. Ciuryło, G. Consolati, M. Doser, K. Eliaszuk, A. Giszczak, L. T. Glöggler, Ł. Graczykowski, M. Grosbart, F. Guatieri, N. Gusakova, F. Gustafsson, S. Haider, M. A. Janik, T. Januszek, G. Kasprowicz, G. Khatri, Ł. Kłosowski, G. Kornakov, V. Krumins, L. Lappo, A. Linek, J. Malamant, S. Mariazzi, L. Penasa, V. Petracek, M. Piwiński, S. Pospisil, L. Povolo, F. Prelz, S. A. Rangwala, B. S. Rawat, B. Rienäcker, V. Rodin, O. M. Røhne, H. Sandaker, P. Smolyanskiy, T. Sowiński, D. Tefelski, T. Vafeiadis, C. P. Welsch, T. Wolz, M. Zawada, N. Zurlo","doi":"arxiv-2409.01058","DOIUrl":"https://doi.org/arxiv-2409.01058","url":null,"abstract":"Modern physics experiments are frequently very complex, relying on multiple\u0000simultaneous events to happen in order to obtain the desired result. The\u0000experiment control system plays a central role in orchestrating the measurement\u0000setup: However, its development is often treated as secondary with respect to\u0000the hardware, its importance becoming evident only during the operational\u0000phase. Therefore, the AEgIS (Antimatter Experiment: Gravity, Interferometry,\u0000Spectroscopy) collaboration has created a framework for easily coding control\u0000systems, specifically targeting atomic, quantum, and antimatter experiments.\u0000This framework, called Total Automation of LabVIEW Operations for Science\u0000(TALOS), unifies all the machines of the experiment in a single entity, thus\u0000enabling complex high-level decisions to be taken, and it is constituted by\u0000separate modules, called MicroServices, that run concurrently and\u0000asynchronously. This enhances the stability and reproducibility of the system\u0000while allowing for continuous integration and testing while the control system\u0000is running. The system demonstrated high stability and reproducibility, running\u0000completely unsupervised during the night and weekends of the data-taking\u0000campaigns. The results demonstrate the suitability of TALOS to manage an entire\u0000physics experiment in full autonomy: being open-source, experiments other than\u0000the AEgIS experiment can benefit from it.","PeriodicalId":501374,"journal":{"name":"arXiv - PHYS - Instrumentation and Detectors","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：