high luminosity large hadron collider - sr2s
DESCRIPTION
Space Radiation Superconductive Shield (SR2S) is an EU funded FP7 project which is researching new technology to protect astronauts in space from radiation. On 9th April 2014 in Torino, Italy, SR2S held their first conference to give an update on the project so far. For more information visit: www.sr2s.eu Twitter - @SR2SMarsTRANSCRIPT
The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404.
The HL-LHC project and beyond: an op- portunity for MgB2
Lucio Rossi – CERN
FP7 - S2RS WorkshopApril 9, 2014
2L. Rossi @ S2RS Workshop - Torino 9 April 2014
Goal of High Luminosity LHC (HL-LHC) as fixed in November 2010
EU collaboration with JP and USA :FP7 – HiLumi LHC Design Study
The main objective of HiLumi LHC Design Study is to determine a hardware configuration and a set of beam parameters that will allow the LHC to reach the following targets:A peak luminosity of 5×1034 cm-2s-1 with levelling, allowing:An integrated luminosity of 250 fb-1 per year, enabling the goal of 3000 fb-1 twelve years after the upgrade.
Leveling means that VIRTUAL lumi is mich higher!
3L. Rossi @ S2RS Workshop - Torino 9 April 2014
4 July 2012 : Boson got! (with 5 fb-1)
4L. Rossi @ S2RS Workshop - Torino 9 April 2014
2013: HL-LHC: from Design Study to Construction Project (funded)
c) Europe’s top priority should be the exploitation of the full potential of the LHC, including the high-luminosity upgrade of the machine and detectors with a view to
collecting ten times more data than in the initial design, by around 2030. This upgrade programme will also provide further exciting opportunities for the study of flavour physics and the quark-gluon plasma.
Update of 2013Approved at special CERN Council Held in Brussels 30 May 2013
5L. Rossi @ S2RS Workshop - Torino 9 April 2014
Technical bottlenecksCryogenics
IT IT
ITIT
IT
ITIT
IT
RF
RF
Never good to couple RF with Magnets !
Reduction of availabe cryo-power and coupling of the RF wiht the Arc (thermal cycle requires > 2 months
and many tests)
6
P7 : EPC and DFB near collimators
L. Rossi @ S2RS Workshop - Torino 9 April 2014
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Availability: SC links removal of EPCs, DFBs from tunnel to surface
L. Rossi @ S2RS Workshop - Torino 9 April 2014
2150 kA
1 pair 700 m 50 kA – LS24 pairs 300 m 150 kA (MS)– LS3 4 pairs 300 m 150 kA (IR) – LS3 tens of 6-18 kA CLs pairs in HTS
A. Ballarino
8L. Rossi @ S2RS Workshop - Torino 9 April 2014
The most straight forward action:reducing beam size with a «local» action
Quadrupole triplet and D1
Smaller larger IT aperture
LHC has better aperture than anticipated: now all margin can be used; however is not possible to have < 40 cm
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The critical zone around IP1 and IP5
L. Rossi @ S2RS Workshop - Torino 9 April 2014
1.2 km of LHC !!
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LHC low-β quads: steps in magnet technology from LHC toward HL-LHC
LHC (USA & JP, 5-6 m)70 mm, Bpeak 8 T
1992-2005
LARP TQS & LQ (4m)90 mm, Bpeak 11 T2004-2010
LARP HQ120 mm, Bpeak 12 T
2008-2014
LARP & CERNMQXF150 mm, Bpeak 12.1 T2013-2020
New structure based on bladders and keys (LBNL, LARP)
L. Rossi @ S2RS Workshop - Torino 9 April 2014
The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404.
CLIQ – Coupling-Loss Induced Quench (EU Patent EP13174323.9, June 2013)
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CurrentChange
Magnetic Field
Change
Coupling-Losses(Heat)
QUENCHTemperature
Rise
E. Ravaioli et al., MT23, 2013.
E. Ravaioli et al., EUCAS11, 2013.
E. Ravaioli et al., CHATS-AS, 2013.
E. Ravaioli et al., Cryogenics, 2014.
E. Ravaioli et al., SuST, 2014.
CLIQ can quench a magnet by oscillating the current of a magnet, thus generating coupling losses (=heat) in the conductor itself.With respect to existing quench protection systems (i.e. quench heaters), CLIQ can offer:• easier implementation and repair, • faster response, • lower hot-spot temperature,• lower failure risk.
EU Patent EP13174323.9, June 2013.
V. Datskov, E. Ravaioli, G. Kirby
12L. Rossi @ S2RS Workshop - Torino 9 April 2014
16 mm in Q1 and 6 mm elsewhere
tungsten insertson the beam screen
SHIELDING THE NEW TRIPLET – CP – D1 [II]
HL-LHC vs LHC
(BEFORE vs AFTER LS3)beam screen gap in the interconnects is critical
tungsten in the BPM’s
more than 600 W in the cold masses
as well as in the beam screen
(i.e. 1.2-1.3 kW in
total)
larger values for increasing crossing angle
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Halo control (hollow e-lens)
L. Rossi @ S2RS Workshop - Torino 9 April 2014
14L. Rossi @ S2RS Workshop - Torino 9 April 2014
In-kind contribution and Collaboration for HW design and prototypes
Q1-Q3 : R&D, Design, Prototypes and in-kind USAD1 : R&D, Design, Prototypes and in-kind JPMCBX : Design and Prototype ESHO Correctors: Design and Prototypes ITQ4 : Design and Prototype FRCC : R&D, Design and in-kind USA CC : R&D and Design UK
ATLASCMS
High Luminosity LHC: and then?• LHC has been the summit of 30 y of development
• HiLumi LHC is the step beyond LHC in technology on a «moderate» scale, it is –also- a test bed
• For What?
2000 large magnets of 15-20 T1500 tons of HEP grade Nb3Sn500 tons of HTS for magnets
100 tons of SC for Sc links
toda
y
with emphasis on proton-proton and electron-positron high-energy frontier machines. These design studies should be coupled to a vigorous accelerator R&D programme, including high-field magnets and high-gradient accelerating structures, in collaboration with national institutes, laboratories and universities worldwide.
“to propose an ambitious post-LHC accelerator project at CERN by the time of the next Strategy update”d) CERN should undertake design studies for accelerator projects in a global context, d) CERN should undertake design studies for accelerator projects in a global context,
HFM – HE-LHC / FCC
New project under consideration:FCC: Future Circular Collider
16 T 100 TeV in 100 km20 T 100 TeV in 80 km
Design Study by 2018 (for next EU Strategy Update of HEP)Collision p-p, ions-ions, p-ions but also e+-e- at 350 GeV and e-p
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For HE-LHC :injection based on SPS+Possible use of Tevatron and HERA dipoles…
L. Rossi @ S2RS Workshop - Torino 9 April 2014
HE-LHC
Linac4
SPS+
New injectors optimization
20L. Rossi @ S2RS Workshop - Torino 9 April 2014
Opportunity for MgB2 in FCC or HE-LHC• Injectors: SC Transmission
line 2 T SC magnets
• Fast cycle medium field 4-5 T dipoles in MgB2 with higher stability?
• Corrector magnetsin highly radiactive zones:collaboration agreement CERN-INFN for MgB2 corrector protoytpes includes R&D for MgB2 corrector R&D: if succesfull can open a way
• However: today the cost of MgB2 is still too high wrt to NbTi for an accerlator where LHe is not a big issue
The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404.
THANKS
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Displacing EPC and DFB in the adjacent TDZ tunnel ( 500 m away) via SC links
DQR IP7
Q4Q5D3Q6DFBMDFBAQ11, Q10…Q7
IP 6
D4
4.5 K
8.75 m 1 m Warm magnets (PCs in UJ 76)
RR 73RR 73
L. Rossi @ S2RS Workshop - Torino 9 April 2014
23L. Rossi @ S2RS Workshop - Torino 9 April 2014
L = 20 m(252) 1 kA @ 25 K, LHC Link P7
= 0.98 mm
= 65 mm, |Itot|=150 kA