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<p class="MsoNormal" style="text-align: center;" align="center"><b
style=""><u><span
style="font-size: 20pt; line-height: 115%; font-family: "Times New Roman","serif";">SPECIAL
SEMINAR<o:p></o:p></span></u></b></p>
<p class="MsoNoSpacing"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 18pt; line-height: 115%; font-family: "Times New Roman","serif";"><span
style=""> </span>“THE ATLAS SUPERCONDUCTING MAGNET SYSTEM AT
THE LHC, FIRST YEARS OF OPERATION AND OUTLOOK TO FUTURE DETECTORS”<o:p></o:p></span></b></p>
<p class="MsoNoSpacing"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 16pt; line-height: 115%; font-family: "Times New Roman","serif";">H.H.J.
ten Kate<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 16pt; line-height: 115%; font-family: "Times New Roman","serif";">ATLAS
Magnet Project Leader, CERN<o:p></o:p></span></b></p>
<p class="MsoNoSpacing"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align: center;" align="center"><b
style=""><u><span style="font-family: "Times New Roman","serif";">ABSTRACT<o:p></o:p></span></u></b></p>
<p class="MsoNormal"><span
style="font-family: "Times New Roman","serif";">The
superconducting magnet system of the ATLAS Detector at the Large Hadron
Collider at CERN has four magnets, a Barrel Toroid, two End-Cap Toroids
and a
Central Solenoid. It provides the magnetic field for the muon- and
inner
detectors, respectively.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family: "Times New Roman","serif";">The huge
Barrel Toroid with outer dimensions of 25 m length and 20 m diameter is
an
assembly of eight racetrack coils. The coils are would with an aluminum
stabilized NbTi conductor and operate at 20.5 kA and 3.9 T peak
magnetic field
in the windings. The coils, in total 370 tons of cold mass, are
conduction
cooled at 4.8 K by circulating forced flow helium in cooling tubes
attached to
the cold mass. The two End-Cap Toroids are smaller sized, still 11 m in
diameter and 5 m in height. The Central Solenoid has dimensions of 2.4
m
diameter and 5.7 m length. The system stored energy is 1.6 GJ.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family: "Times New Roman","serif";">After
the successful on-surface tests the magnets were installed in the ATLAS
cavern
100 m underground. The Magnets were successfully charged to full field
and
since Sep 2009 we are in running and data taking condition.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family: "Times New Roman","serif";">Test
results of this complex and unique magnet system and some of the
lessons learnt
are reported. Finally an outlook to the next generation of magnets for
future
detectors is presented. <o:p></o:p></span></p>
<p class="MsoNoSpacing"><o:p> </o:p></p>
<p class="MsoNoSpacing" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 14pt; font-family: "Times New Roman","serif";">Thurs.,
October 28, 2010<o:p></o:p></span></b></p>
<p class="MsoNoSpacing" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 14pt; font-family: "Times New Roman","serif";">11:00
AM<o:p></o:p></span></b></p>
<p class="MsoNoSpacing" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 14pt; font-family: "Times New Roman","serif";">CEBAF
Center AUD.<o:p></o:p></span></b></p>
<p class="MsoNoSpacing" style="text-align: center;" align="center"><b
style=""><span
style="font-size: 14pt; font-family: "Times New Roman","serif";">Cookies
& Coffee at 10:45 AM</span></b></p>
<p class="MsoNoSpacing" style="text-align: center;" align="center"><br>
<b style=""><span
style="font-size: 14pt; font-family: "Times New Roman","serif";"><o:p></o:p></span></b></p>
<u><br>
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