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<font color="#cc0000"><u><i><b>PLEASE NOTE THE DATE AND TIME OF THE
FOLLOWING SEMINAR</b></i></u></font><br>
<br>
<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";"><font
color="#cc0000">SPECIAL
SEMINAR</font><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<o:p></o:p></span></b></p>
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</font><font color="#cc0000"><tt> </tt></font></b><br>
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