Proposal to Develop a Phase I External Muon Identifier (EMI) for Use with the NAL 30 Bubble Chamber
Aug 15, 1972
39 pages
DOI:
Report number:
- FERMILAB-PROPOSAL-0155
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Abstract:
We propose to build a Phase I External Muon Identifier for
use with the NAL 30 ~3 bubble chamber. The Phase I EMI consists
of: l) a passive internal absorber filling the space between
the magnet coils and matching the coil thickness in collision
lengths (3.2 collision lengths stainless steel subtending up
to 180° horizontally and weighing 20 tons), and 2) a single
active external detector plane using proportional chambers to
provide x, y, and diagonal information. Test data summarized
in this proposal indicate.that at 4 GeV/c the Phase I EMI will
reject incident pions with (94±1)% efficiency while accepting
96% of the incident muons. Further, these efficiencies vary
slow~y with particle momentum. The construction cost to NAL
of this development is estimated as $120K.Note:
- Spokesperson: M.L. Stevenson
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