Work in progress in the East experimental area of the PS 1961 1961 This area (later covered by a Hall) was initially conceived as an open "apron". View looking East. Beam extraction area of the PS East experimental zone CPS CPS 1964 1964 Construction of the East Hall 1962 1962 East experimental area of the PS : the 'apron" is being covered by a hall. The Large Bubble Chamber building takes shape 1961 1961 East experimental area of the PS (view looking S-E) O.sub(6) beam 1965 1965 The O.sub(6) beam set up in the East experimental area supplied the 2 m hydrogen bubble chamber. Aerial view of CERN, looking S-W 1963 1963 Note in particular the completed East experimental area of the PS (center right). East experimental area of the PS 1961 1961 View towards the Jura : the "apron" with its service tunnel and slab. East Hall under construction 1962 1962 Presently Hall no 157, this experimental area was initially conceived as an open-air "apron". East experimental area of the PS 1961 1961 Building work is under way on the "apron" (view looking S-E). PS East experimental area : casting the floor slab 1961 1961 Initially conceived as an open-air slab, the concrete work required special technical solutions. Surveyors at work on the PS East area 1961 1961 Left to right : Marc Changeat and Jean Bruderlein measure the deformation of the floor under a 150 ton load. PS South Hall area : view looking East 1957 1957 View taken from "Mount Citron" - Also, under construction, present buildings Nos 8, 6 and 9. View of the neutrino area 1967 1967 View of the neutrino area at the end of the year. In the foreground is the roof of the NPA hall, in the upper part of the photograph the PS ring and the East hall. Assembly of the "safety hydrogen sphere" for the liquid hydrogen bubble chambers 1961 1961 Located in the S-E corner of the East experimental area of the PS, this sphere was meant to contain possible spills of hydrogen. The "safety hydrogen sphere" nearly completed 1961 1961 Located in the S-E corner of the East experimental area of the PS, this sphere was meant to contain possible spills of hydrogen. Building work on the PS East experimental area 1961 1961 View towards the Jura : on the right the nearly completed compressor Building (now No 252), while the foundations of the large bubble chamber hall (now No 156) have just been started. PS beam ejection towards East Area Beams PS 1975 1975 From left one sees the PS line, the primary beam e13 from straight section 62 (slow ejection), the fast ejection system from straight section 58 (Annual Report 1975) PS East experimental area : the left half of the hall is used for physics, the rest as storage space 1964 1964 View looking towards the PS. Note (foreground, left to right) the vacuum tank and the piston test stand for the 2-m bubble chamber. Assembly of optical spark chambers for the experiment NUE Related album Nue T230 neutrino PS 1974 1974 To continue the research on neutral currents after their discovery in Gargamelle in 1973, the Aachen-Padua Collaboration set up in the neutrino beam of the PS South-East Area, behind Gargamelle, an assembly of 150 optical spark chambers, 2x2 m2 extending over 8 m (experiment T230, NUE). Hans Reithler stands on the right.