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Research
CERN-ARCH CERN-ARCH-DG-CLS-CERN-ARCH-DG-CLS-04- · Serie · 01/01/1987-31/12/1998
Parte de Christopher Llewellyn Smith

These documents represent the filing system of Christopher Llewellyn Smith during his period as Director-General of CERN. They cover all aspects of CERN's activities, and include: relations with the Delegations relations with Administrative Sector, Accelerator and Technology Sector, and Computing and Research Sector minutes of Directorate, Management Board meetings, etc... minutes of scientific committees and other committees meetings conferences correspondence documents concerning official visits personnel matters concerning appeals, early retirements, policy, recruitment... * DG working files

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Correspondance
CERN-ARCH CERN-ARCH-DG-CLS-CERN-ARCH-DG-CLS-05- · Serie · 01/01/1987-31/12/1998
Parte de Christopher Llewellyn Smith

These documents represent the filing system of Christopher Llewellyn Smith during his period as Director-General of CERN. They cover all aspects of CERN's activities, and include: relations with the Delegations relations with Administrative Sector, Accelerator and Technology Sector, and Computing and Research Sector minutes of Directorate, Management Board meetings, etc... minutes of scientific committees and other committees meetings conferences correspondence documents concerning official visits personnel matters concerning appeals, early retirements, policy, recruitment... * DG working files

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LHC prototype beam tubes
Heritage collection CERN-OBJ-CERN-OBJ-AC-008 · Unidad documental simple · 1995
Parte de Heritage Collection Test

Slice of the Large Hadron Collider (LHC) prototype beam tubes in dipole magnet The LHC is the world’s largest and most powerful particle accelerator that accelerates and collides two beams of protons or ions to near the speed of light in opposite directions. It first started up in 2008, and is the latest addition to CERN’s accelerator complex (2025). The LHC consists of a 27-km ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way. Thousands of magnets of different varieties and sizes are used to direct the beams around the accelerator. The high bending and accelerating fields needed can only be reached using superconductor magnets at very low temperature (‑271.3°C). There are 1232 dipole magnets like this prototype in the LHC, used to guide the particles around the 27 km ring. Dipole magnets must have an extremely uniform field, which means the current flowing in the coils that produce the magnetic field has to be very precisely controlled. Nowhere before has such precision been achieved at such high currents. The temperature is measured to five thousandths of a degree, the current to one part in a million. The current creating the magnetic field pass through superconducting wires at up to 12 500 amps, about 30 000 times the current flowing in a 100 W light bulb. Since the LHC accelerate two particle beams moving in opposite directions, it is really two accelerators in one. To keep the machine as compact and economical as possible, two dipole magnets are built into a single housing.

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CERN Buildings Management
CERN-ARCH CERN-ARCH-SCE-CERN-ARCH-SCE-BAT · Serie
Parte de Archives of the Site and Civil Engineering Department (SCE)

Records documenting the management, operation, and maintenance of CERN buildings and facilities. The series includes administrative files, technical documentation, maintenance records, contracts, reports, correspondence, and plans relating to building infrastructure across the CERN site.

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CERN Neutrinos to Gran Sasso (CNGS)
CERN-ARCH CERN-ARCH-SCE-CERN-ARCH-SCE-CNGS · Serie
Parte de Archives of the Site and Civil Engineering Department (SCE)

Records relating to civil engineering and site infrastructure activities for the CERN Neutrinos to Gran Sasso (CNGS) project. The series includes project management files, technical reports, construction and installation documentation, correspondence, contracts, and records concerning underground works, surface facilities, and infrastructure support associated with the CNGS beam and related installations.

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Large Electron-Positron (LEP)
CERN-ARCH CERN-ARCH-SCE-CERN-ARCH-SCE-LEP · Serie
Parte de Archives of the Site and Civil Engineering Department (SCE)

Records documenting civil engineering, site management, and infrastructure support for the Large Electron–Positron (LEP) accelerator. The series includes planning and construction files, technical documentation, maintenance records, correspondence, reports, and drawings related to tunnels, experimental areas, surface buildings, and associated site infrastructure during the construction, operation, and dismantling phases of LEP.

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Finance Committee WG on Pension Policy
CERN-ARCH CERN-ARCH-FC-WG-PP-01 to 04 · Serie · 01/04/1973-31/05/1976

This collection contains reports and publications produced and studied by the Working Group on Pension Policy.

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