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Requirements of luminosity as a function of the center-of-mass energy of
linear colliders, where the energies of the first and second phases and the minimum
required luminosities are depicted together with the physics targets.
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Top view of the beam line from the exit of the main linac to the
interaction point (IP) of JLC-I(500GeV).
- Muon attenuator for JLC-I(KEK) presented by Y.Namito at LC93. Two iron pipes are
magnetized axially in opposite directions for both charged muons which can be trapped;
also, the 120m length of the iron pipe corresponds to a mean range of 250GeV muons.
- Muon spoiler for NLC(SLAC) presented by L.Keller at LC93. A square tunnel of
3x3m is filled by the 1.5 Tesla magnetized spoiler, the length and weight of which are
9.1m and 750 tons, respectively.
- Horizontal(6) and vertical(35) beam envelopes through the
last bending magnet and four final focus quadrupole magnets(QC1,QC2,QC3,QC4) for the JLC-I.
The maximum divergences of the synchrotron radiation are also drawn by arrows.
- Profiles of the synchrotron radiation at QC1.
The profile at the center accompanies the in-coming beam. The two right-hand
side's ones are passing through QC1 of 2.4m long after a collision with a 8mrad
horizontal crossing.
- Electrons and positrons scattered by beam-beam interaction at JLC-I, where the
the vertical and horizontal axes are the scattering angles in vertical and horizontal
directions, respectively.
- Masking system in a solenoidal magnetic field of 2 Tesla around the IP for
JLC-I.
- Particles of pairs at the front face of the mask (44cm from the IP)
for JLC-I, where the vertical axis is their energy and the horizontal one is their
radial position.
- Hits per a bunch crossing by the pairs in B=2Tesla as a function of the
radius( of a cylinder for two angular regions ((a) and (b)) for JLC-I.
- Masking system for TESLA proposed by D.Schulte at LC95, where
66mrad and 33mm. The nearest superconducting quadrupole magnet is
located 3m from the IP, and the aperture is 48mm.
- Hits per a bunch crossing in the inner layer of the vertex detector for TESLA,
where the vertex detector covers the angular region 200mrad.
- Schematic view of the JLC detector. The total volume and weight are m and 15,000 ton, respectively.
- Power-spectrum density of vertical ground motion at various locations.
- Ground-motion tolerances and
integrated spectrum as a function of the frequency, based on SLC linac measurements during
``quiet" conditions.
Toshiaki Tauchi
Fri, Dec 20, 1996 02:24:05 PM