> **T[evatron]{.smallcaps}**
>
> **19.d. [Background]{.underline}**
>
> The Tevatron is the highest energy accelerator in the world. It is
> running in proton-antiproton collider mode at 980 GeV (each beam)
> providing luminosity for the DZero and CDF experiments.
>
> **19.f. [Accomplishments in FY04]{.underline}**

Run II is continuing through FY04. The Tevatron operated reliably at 980
GeV colliding 36 proton bunches on 36 antiproton bunches and delivered
luminosity to the CDF and DZero detectors. The Tevatron operated in this
mode except for a fall shut down for maintenance and improvements. Peak
luminosity to date is 67 x 10^30^ cm^-2^sec^-1^ and the record
weekly-integrated luminosity is about 12 pb^-1^. During the eight-week
shutdown completed in early FY04, many items, identified in studies,
were accomplished to allow increased luminosity and improve the
reliability of operation. A conductive liner was installed inside the
aperture of the field free region of Lambertson magnets at F0 location
to reduce transverse impedance, a new collimator was installed at A48 to
improve the shielding of the CDF detector in case of kicker prefires,
many Tevatron dipoles were brought into alignment, coil assemblies in
106 dipoles were raised by \~0.1 mm to reduce the skew quadrupole
component responsible for transverse coupling in the machine, the CDF
low-beta quadrupoles were aligned in order to put the B0 interaction
region within detector specifications, a global geodetic Tevatron Net
was installed and the position of all Tevatron elements linked to it, a
system of 24 hydrostatic level sensors was installed in the B-sector of
the Tevatron to monitor vertical motion of quadrupole magnets, the
stands of 52 Tevatron dipoles were replaced. The total integrated
luminosity in FY04 is expected to be within the range of 0.23-0.31
fb^-1^. Two shifts a week of beam studies were used, on average, to
maintain the pace of the luminosity progress. The major focus of these
studies was improvement of transfer efficiencies, reduction of emittance
dilution and correction of the machine lattice imperfections. A shutdown
of 13 weeks was scheduled towards the end of FY04.

### 

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### 19.g.1. Accomplishments Expected in FY05

The Tevatron will be operated for about ten months in Run II with 36x36
proton and antiproton bunches. This will be an intensive period of
providing integrated luminosity to the CDF and DZero experiments. Peak
luminosity in this period is expected to be up to 85 x 10^30^
cm^-2^sec^-1^. The total integrated luminosity is expected to be within
the 0.37-0.56 fb^-1^ range. There will be up to two months of shutdown
for improvements and maintenance.

#### 

#### 

#### 19.g.2. [Future Accomplishments Expected in FY06 and Beyond]{.underline}

It is anticipated that at the end of FY05, the total Run II integrated
luminosity will approach 0.9-1.2 fb^-1^. During FY06, it is expected
that the Tevatron will again be shut down for maintenance and continuing
improvements. The luminosity improvement is expected to be driven by up
to a several-fold increase of antiproton intensity and 10-20% increase
of proton intensity. It is expected that significant beam study time
will be needed in order to commission the Tevatron in the high
luminosity-operating mode.