Giorgio Ambrosio Magnets L2 US HLLHC Accelerator Upgrade Project MQXFAP2 Shims and Loading Readiness Review By Zoom February 15 2018 Introduction MQXFAP2 is the second prototype of the MQXFA magnets to be used in Q1 and Q3 for the High Luminosity LHC The ID: 783745
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Slide1
Introduction and Charges
Giorgio AmbrosioMagnets L2U.S. HL-LHC Accelerator Upgrade Project
MQXFAP2 Shims and Loading Readiness ReviewBy Zoom, February 15, 2018
Slide2Introduction
MQXFAP2 is the second prototype of the MQXFA magnets to be used in Q1 and Q3 for the High Luminosity LHC. The
goal of MQXFAP2 is to demonstrate readiness for AUP project start by meeting all MQXFA requirements*. The test of the first prototype (MQXFAP1) is in progress and preliminary results and analyses will be presented at this review.
The goal of this review is to evaluate the coil shim plan
and
assess readiness to start MQXFAP2 azimuthal and axial loading
.
G. Ambrosio - Introduction and Charges
2
*MQXFA Functional Requirement Specs
CERN EDMS #1535430
Slide3CHARGE
The committee is requested to answer the following questions:Is the
coil shim plan adequate to assure that MQXFAP2 will meet requirements?Are the preload targets adequate to assure that MQXFAP2 will meet requirements?
Are MQXFAP1 test results and analyses supporting the MQXFAP2 shim plan and preload targets?Is there any other comment or recommendation to assure MQXFAP2 will meet requirements?
G. Ambrosio - Introduction and Charges
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Slide4Back up
Splides
G. Ambrosio - Introduction and Charges
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Slide5US Contribution to HL-LHC Inner Triplets
Q1/Q3
Cryostated Magnets
Magnetic length: 4.2 + 4.2 m (MQXFA)
Cryostat parts provided by CERN (kit)
Q2 cold masses by CERN
Magnetic length: 7.15 m (MQXFB)
G. Ambrosio - Introduction and Charges
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US cold mass
Slide6MQXFA/B Main Parameters
Parameter
Unit
MQXFA/B
Coil aperture
mm
150
Magnetic length
m
4.2/7.15
N. of layers
2
N. of turns Inner-Outer layer
22
-
28
Operation temperature
K
1.9
Nominal gradient
T/m
132.6
Nominal current
kA
16.5
Peak field at nom. current
T
11.4
Stored energy at nom.
curr
.
MJ/m
1.2
Diff. inductancemH/m8.2Strand diametermm0.85Strand number40Cable widthmm18.15Cable mid thicknessmm1.525Keystone angle0.4
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G. Ambrosio et al., “MQXFS1 Quadrupole Design Report” LARP DocDB 1074
P. Ferracin et al., “
Development of MQXF, the Nb
3Sn Low-β Quadrupole for the HiLumi LHC ” IEEE Trans App. Supercond. Vol. 26, no. 4, 4000207
G. Ambrosio - Introduction and Charges