Name of creator
DELPHI (Detector with Lepton, Photon and Hadron Identification) Collaboration
DELPHI was one of the four major detectors (with ALPEH, L3 and OPAL) used in the LEP (Large Electron and Positron collider) experiments, approved in November 1982. The construction of DELPHI began in 1983 and was completed in 1988; ready for the start-up of LEP in August 1989 550 physicists from 22 countries were involved in this collaboration.
DELPHI's weight was about 3500 tons (including a supraconductor magnet of 82 tons). DELPHI was not a single detector but a combination of trackers, calorimeters (such as the High-density Projection Chamber), scintillator counters, luminosity detectors, muon chambers and hadron identificators based on the "Ring Imaging Cherenkov" (RICH) technique; the high precision of the Microvertex (important for the detection of Quark B) is also noteworthy.
DELPHI was located at PIT 8, one hundred metres below ground level. The dismantling of DELPHI began in November 2000 and was completed in September 2001. As a whole, LEP confirmed the Standard Model theory and gave clear indications on how to search for the Higgs boson.
The first spokesperson of DELPHI was Ugo Amaldi (1981-1994), then Jean-Eudes Augustin (1995-1996), Daniel Treille (1997-1998), Walter (Wilbur) Venus (1998-1999), Tiziano Camporesi (2000-2001) and Jan Timmermans (2002- ).
The first box of the collection (V0501) which will be referenced CERN-ARCH-DELPHI-01-... has not been yet received (10th of June 2002).
Immediate source of acquisition or transfer
Received from Ugo Amaldi in summer 2001.
Scope and content
The items in this collection were created or received by Ugo Amaldi, spokesperson of DELPHI experiment from 1981 to 1994. They essentially consist of correspondance, projects and discusions regarding the future DELPHI detectors and proceedings of conferences (DELPHI Weeks, DELPHI Forum, ...). This collection gives an overview on how a large scientific and technical project was conducted.
Appraisal, destruction and scheduling information
Nothing was destroyed.
No further accruals are expected.
System of arrangement
The original order was preserved.
Conditions governing access
See file level description and the CERN operational circular No 3: rules applicable to archival material and archiving at CERN. In general, records on any subject that are over 30 years old, and all records of a purely scientific nature, may be consulted.
Conditions governing reproduction
Copyright is retained by CERN, no reproduction without permission.
Language / scripts of material
Most of the material is written in English, a small part is in French, Italian, German or Russian.
Listed to file level in the CERN Archive Database.