Correction to:Radiation Detection Technology and Methods(2024)8:1-1105.https://doi.org/10.1007/s41605-024-00463-y.In this article all authors name was missing in the springer link.It has been corrected.The original ar...Correction to:Radiation Detection Technology and Methods(2024)8:1-1105.https://doi.org/10.1007/s41605-024-00463-y.In this article all authors name was missing in the springer link.It has been corrected.The original article has been corrected.展开更多
The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international partners.The complex comprises four accelerators:a 3...The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international partners.The complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs factory.In its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs bosons.Increasing the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of magnitude.This Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering aspects.Additionally,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection procedures.Construction is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 years.The commencement of experiments and data collection could potentially be initiated in the mid-2030s.展开更多
Purpose This work proposes a clock and data alignment scheme for the readout electronics system of the future PandaX-nT dark matter detection experiments.Since the waveform information of the photomultiplier signal is...Purpose This work proposes a clock and data alignment scheme for the readout electronics system of the future PandaX-nT dark matter detection experiments.Since the waveform information of the photomultiplier signal is obtained by accumulating all acquisition channels of the front-end digitization module(FDM),it is required that each FDM acquisition channel should be synchronized.Methods The readout electronics system is composed of a clock distribution module,64 FDMs,and 4 data acquisition(DAQ)modules.The multi-board synchronous acquisition circuit can provide the same REF CLOCK and SYSREF signal for multiple FDMs boards to ensure the alignment of the sampled data collected by the analog-to-digital converter.The data aggregation circuit can ensure that the sampled data of multiple FDM boards are aligned with each other when they are aggregated to the DAQ board.Results and conclusions The functional verification test results show that the synchronization between the prototype electronics channels is less than 80 ps,thus enabling to meet the requirements of the readout electronics prototype of PandaX-nT.展开更多
Background Based on the unique PSD characteristic which essentially relies on the detector light yield,liquid argon detector is widely used for dark matter searching experiment.The experimental study of how to get lar...Background Based on the unique PSD characteristic which essentially relies on the detector light yield,liquid argon detector is widely used for dark matter searching experiment.The experimental study of how to get larger light yield for a ton-scale liquid argon detector is worth to be carried out.Purpose A ton-scale liquid argon prototype detector is built to check the detector implementation as well as the light collection efficiency.Methods A ton-scale single-phase liquid argon prototype detector is built in the surface laboratory for scalable detector construction experience.The detector adopts the classical spherical arrangement mode to obtain a large PMT photocathode coverage.Forty-two PMTs are immersed in the liquid argon,and polymer materials are used to construct the PMT supporting structures.Totally about 2.2 tons of liquid argon is used,of which about 160 kg is the active volume.In this paper the details of the experiment as well as the detector performance are introduced.Results Experiment results show that the light yield reaches 6.3 PE/keV,with an effective photon collection efficiency of 74.3%achieved.展开更多
Correction to:Radiation Detection Technology and Methods https://doi.0org/10.1007/s41605-023-00427-8 Page 3,column 1,para 3 under heading The cryogenic system,the word which previously read as.
文摘Correction to:Radiation Detection Technology and Methods(2024)8:1-1105.https://doi.org/10.1007/s41605-024-00463-y.In this article all authors name was missing in the springer link.It has been corrected.The original article has been corrected.
基金support from diverse funding sources,including the National Key Program for S&T Research and Development of the Ministry of Science and Technology(MOST),Yifang Wang's Science Studio of the Ten Thousand Talents Project,the CAS Key Foreign Cooperation Grant,the National Natural Science Foundation of China(NSFC)Beijing Municipal Science&Technology Commission,the CAS Focused Science Grant,the IHEP Innovation Grant,the CAS Lead Special Training Programthe CAS Center for Excellence in Particle Physics,the CAS International Partnership Program,and the CAS/SAFEA International Partnership Program for Creative Research Teams.
文摘The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international partners.The complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs factory.In its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs bosons.Increasing the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of magnitude.This Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering aspects.Additionally,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection procedures.Construction is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 years.The commencement of experiments and data collection could potentially be initiated in the mid-2030s.
文摘Purpose This work proposes a clock and data alignment scheme for the readout electronics system of the future PandaX-nT dark matter detection experiments.Since the waveform information of the photomultiplier signal is obtained by accumulating all acquisition channels of the front-end digitization module(FDM),it is required that each FDM acquisition channel should be synchronized.Methods The readout electronics system is composed of a clock distribution module,64 FDMs,and 4 data acquisition(DAQ)modules.The multi-board synchronous acquisition circuit can provide the same REF CLOCK and SYSREF signal for multiple FDMs boards to ensure the alignment of the sampled data collected by the analog-to-digital converter.The data aggregation circuit can ensure that the sampled data of multiple FDM boards are aligned with each other when they are aggregated to the DAQ board.Results and conclusions The functional verification test results show that the synchronization between the prototype electronics channels is less than 80 ps,thus enabling to meet the requirements of the readout electronics prototype of PandaX-nT.
基金supported by the National Key Research and Development Program of the People’s Republic of China(2016YFA0400304).
文摘Background Based on the unique PSD characteristic which essentially relies on the detector light yield,liquid argon detector is widely used for dark matter searching experiment.The experimental study of how to get larger light yield for a ton-scale liquid argon detector is worth to be carried out.Purpose A ton-scale liquid argon prototype detector is built to check the detector implementation as well as the light collection efficiency.Methods A ton-scale single-phase liquid argon prototype detector is built in the surface laboratory for scalable detector construction experience.The detector adopts the classical spherical arrangement mode to obtain a large PMT photocathode coverage.Forty-two PMTs are immersed in the liquid argon,and polymer materials are used to construct the PMT supporting structures.Totally about 2.2 tons of liquid argon is used,of which about 160 kg is the active volume.In this paper the details of the experiment as well as the detector performance are introduced.Results Experiment results show that the light yield reaches 6.3 PE/keV,with an effective photon collection efficiency of 74.3%achieved.
文摘Correction to:Radiation Detection Technology and Methods https://doi.0org/10.1007/s41605-023-00427-8 Page 3,column 1,para 3 under heading The cryogenic system,the word which previously read as.
