Status of the LHC Project L.Evans - C.Wyss Riunione CSN1 INFN Napoli, 21 Settembre 2005
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Status of the LHC ProjectL.Evans - C.WyssRiunione CSN1 INFNNapoli, 21 Settembre 2005
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20052
L.R. Evans – EDMS Document No. 521217
SPC
3
• length of newly tested part ~ 2.5 km
• over 400 magnets
beam tests23./24.10.04
6./7.11.04
TI 2
TI 8
TI 2 upstream part commissioning (w/o beam) possible as of Q2/2005
beam tests 8.9.03
SPSLHC
AB/BT equipment in PS complex
MQI chamber
13:39 beam at the end of TI 8, some 2.5 km away, at first attempt
General situation
TI 8 commissioning / V.Mertens / TCC, 29.10.2004
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Beam parameters obtained from the central frequency measurements, averaged over the data obtained from the
horizontal and vertical planes.
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Results of TI8 test
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End of civil engineering works in Point 5 (1st February 2005)
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Superconducting cable 1
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Superconducting cable 2
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Dipole cold masses
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Number of quenches to reach 8,33 Tat the first cooldown (560 dipoles)
0102030405060708090
100110120130140150160170180190200210220230
Number of quenches to reach 8.33T
Nu
mb
er o
f c
ryo
-d
ipo
les 01 02 03
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LHC Dipoles: integrated field
10.07
10.09
10.11
10.13
10.15
0 100 200 300 400 500 600 700
Magnet progressive number
Int tr
ansf
func
(Tm
/kA
)
-40
-20
0
20
40
Units
Firm 1
Firm 2
Firm 3
AT-MAS
Cold mass
upper limit for single magnet (3 sigma)
lower limit for single magnet (3 sigma)
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Dipole field quality: average b3
-10
-5
0
5
10
0 100 200 300 400 500 600 700
Magnet progressive number
b3
inte
gra
l (u
nits
)
Firm 1
Firm 2
Firm 3
Cold mass
upper limit for systematic
lower limit for systematic
AT-MAS & MTM
Cross-section 2 Cross-section 3
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Arc quadrupole cold masses
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MSCB sextupole dipole correctors
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Cryodipole overview
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SSS overview
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Magnet Installation
• Installation is progressing in sectors 8-1 and 4-5. More than 100 superconducting magnets have been installed. The installation rate must now ramp up to 20 magnets per week (16 dipoles and 4 SSSs) in the next few weeks.
• At the end of October, sector 7-8 will be liberated for magnetic installation. From then on there will be no shortage of slots.
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First cryodipole lowered on 7 March 2005
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First SSS lowered on 19 April 2005
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Transport in the tunnel with an optical guided
vehicle
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Transfer on jacks
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Preparation of interconnect
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Interconnection of beam tubes
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Interconnect in sector 8-1: in progress in sub-sectors C and F
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Pre-assembly of first low-beta triplet
(hall 181)
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UA47: Quench protection & Power converters
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Cryogenics overview
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2400 W @ 1,8 K in the UX85 cavern
1.8K refrigeration units1st Pump-down in final LHC configuration
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
7:12 8:24 9:36 10:48 12:00
Time
Su
cti
on
Pre
ss
ure
[B
]
0
500
1000
1500
2000
2500
Co
oli
ng
Po
we
r [
W]
Suction Pressure
Set point
1.8K Cooling Power
P8 - 7 April 2005
Installed mode 2400 W @ 1.8 K
Pump-down 15 mbar
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Repair of QRL modules
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Repair of special QRL elements at
CERN
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Cryogenic distribution line
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QRL
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Reinstallation of QRL in 7-8
• Sub-sectors A and B (600 m) have been cooled down on Wednesday 14th September.
• After the cold tests, the inner triplet will be installed, cooled down and powered whilst the rest of the line is being installed.
First cooldown of 600 m cryogenic LHC line sector 13-14 September 2005
He in
He outTh.screenlineLHe
linePump. line
20 K line
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Conclusions
• Main objectives:– terminate installation in February 2007– first collisions in summer 2007
• The industrial production of standard components is compatible with this objective.
• The ramping up of QRL activities and magnet installation is critical to maintain this schedule.
• Additional actions have been implemented to ensure proper QRL production and installation rates.
• The installation and interconnection of cryomagnets have started in the tunnel.
• The commissioning of technical systems will take place in two adjacent sectors in parallel.
• Main next actions:– partial test of sector 7-8 in autumn 2005– commissioning test of the two first sectors (7-8 and 8-1) in summer
2006– find external collaborators to help with commissioning.
=> many thanks to INFN for its support !