status of the lhc project l.evans - c.wyss riunione csn1 infn napoli, 21 settembre 2005
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Status of the LHC Project L.Evans - C.Wyss Riunione CSN1 INFN Napoli, 21 Settembre 2005. Beam parameters obtained from the central frequency measurements, averaged over the data obtained from the horizontal and vertical planes. Results of TI8 test. - PowerPoint PPT PresentationTRANSCRIPT
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
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20053
Beam parameters obtained from the central frequency measurements, averaged over the data obtained from the
horizontal and vertical planes.
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20054
Results of TI8 test
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20055
End of civil engineering works in Point 5 (1st February 2005)
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20056
Superconducting cable 1
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20057
Superconducting cable 2
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20058
Dipole cold masses
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 20059
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
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200510
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)
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200511
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
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200512
Arc quadrupole cold masses
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200513
MSCB sextupole dipole correctors
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200514
Cryodipole overview
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200515
SSS overview
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200516
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.
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200517
First cryodipole lowered on 7 March 2005
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200518
First SSS lowered on 19 April 2005
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200519
Transport in the tunnel with an optical guided
vehicle
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200520
Transfer on jacks
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200521
Preparation of interconnect
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200522
Interconnection of beam tubes
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200523
Interconnect in sector 8-1: in progress in sub-sectors C and F
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200524
Pre-assembly of first low-beta triplet
(hall 181)
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200525
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200526
UA47: Quench protection & Power converters
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200527
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200528
Cryogenics overview
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200529
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
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200530
Repair of QRL modules
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200531
Repair of special QRL elements at
CERN
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200532
Cryogenic distribution line
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200533
QRL
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200534
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
CERN L.Evans & C.Wyss INFN CSN1 Napoli September 200536
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 !