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Accelerator Report: Overcoming setbacks, antiprotons return as LHC recovers luminescent brilliance（图）
加速器 反质子 强子对撞机
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2023/6/12
The Accelerator Report published on 10 May highlighted that the 2023 antiproton physics run was delayed by 50 days (reducing the run to 122 days instead of the 172 initially scheduled) due to a broken...
LHC experiments see first evidence of a rare Higgs boson decay（图）
大型强子对撞机 希格斯玻色子 衰变证据
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2023/5/29
The discovery of the Higgs boson at CERN’s Large Hadron Collider (LHC) in 2012 marked a significant milestone in particle physics. Since then, the ATLAS and CMS collaborations have been diligently inv...
Accelerator Report: Full house in the LHC（图）
加速器 大型强子对撞机 Full house
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2023/5/29
On 11 May, four days before the original schedule had set a target of 1200 bunches per beam, the LHC made its final intensity ramp-up step to 2400 bunches per beam.
Accelerator Report: Crescendo at the LHC following the first stable beams at 6.8 TeV（图）
加速器 6.8 TeV 稳定光束 大型强子对撞机
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2023/5/25
Late in the afternoon of Friday, 21 April, another important milestone was achieved in the LHC beam commissioning. At 6.58 p.m., one day ahead of schedule, the LHC Engineer in Charge declared “stable ...
HiLumi News: Recovery of an HL-LHC niobium–tin magnet（图）
HL-LHC 铌锡磁铁 加速器
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2023/5/25
CERN and the US Accelerator Upgrade Project (AUP, a consortium of various US institutions including Fermilab, BNL and LBNL laboratories based at Fermilab) are working in tandem to develop, build and t...
New LHC experiments enter uncharted territory（图）
大型强子对撞机 中微子 FASER
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2023/5/26
Although neutrinos are produced abundantly in collisions at the Large Hadron Collider (LHC), until now no neutrinos produced in such a way had been detected. Within just nine months of the start of LH...
Superconductivity for sustainability: a new superconducting link for the High-Luminosity LHC（图）
超导性 可持续发展 大型强子对撞机 新超导链接
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2023/5/26
The Large Hadron Collider (LHC), the world’s largest and most powerful particle accelerator, is also the largest single machine operating in the world today that uses superconductivity. The proton bea...
Cool kickers for the HL-LHC（图）
HL-大型强子对撞机 MKI-Cool Cool kickers
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2023/5/26
Much of the research and development work for the High-Luminosity LHC (HL-LHC) aims to protect the accelerator’s fragile components from the detrimental effects of high luminosity, such as radiation a...
ATLAS delivers most precise luminosity measurement at the LHC（图）
ATLAS 大型强子对撞机 亮度测量
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2023/5/26
When the Large Hadron Collider (LHC) is operating, it produces more than one billion proton–proton interactions every second. But exactly how many take place in the LHC experiments? Critical to every ...
The SM18 test facility in the HL-LHC era（图）
HL-大型强子对撞机 SM18测试设施 高能物理学
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2023/5/26
The SM18 test facility, located in France, near the Meyrin site, was originally built to test and validate the magnets and radiofrequency (RF) cavities of LEP (the Large Electron–Positron Collider). I...
HL-LHC magnet endurance test further confirms niobium–tin’s resilience（图）
HL-大型强子对撞机 耐久性测试 铌锡磁铁 弹性
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2023/5/26
Future accelerator projects, including the high-luminosity upgrade of the Large Hadron Collider, will rely on niobium–tin (Nb3Sn) alloys for their superconducting components, such as electromagnets. T...
Autopsy of an LHC beam dump（图）
大型强子对撞机 光束倾倒 Autopsy
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2023/5/26
During LS2, the LHC’s two external beam dumps were removed from the tunnel and replaced with spare ones. After ten years of operation, they were showing signs of degradation, notably nitrogen leaks. B...
The four LHC experiments are getting ready for pilot beams（图）
大型强子对撞机 导射束 欧洲核子研究中心
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2023/5/30
Update: The first pilot beams circulated in the LHC on 19 October 2021. On 26 October, there were low-intensity test collisions at an injection energy of 450 GeV per beam and stable collisions of prot...
Qualifying HL-LHC magnets and cavities at Uppsala University（图）
乌普萨拉大学 HL-LHC磁体 空腔合格
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2023/5/26
Uppsala University in Sweden has been a valuable partner to CERN since the Laboratory’s foundation. In the 1950s, Uppsala, having just constructed its own cyclotron, contributed to the development of ...
HL-LHC CCT超导磁体项目成功完成低温测试（图）
HL-LHC CCT 超导磁体 低温测试
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2020/9/8
近日，近代物理所磁铁技术室科研人员利用TCF10低温站及自建的超导磁体低温测试平台对CERN亮度升级项目（HL-LHC），斜螺线管型(CCT)双孔径超导磁体进行了测试。测试前后历时2个月，先后完成了磁体机械检测、电气检测、室温磁场测量、低温励磁测试等多项内容。HL-LHC CCT超导磁体项目由高能物理所牵头，近代物理所作为参与单位，计划与各合作单位共同完成13台（1台样机加12台正式磁体）双孔径轨...