EDMS NO.
1366544
REV.
1.0
VALIDITY
DRAFT
REFERENCE : LHC-EQCOD-ES-XXXX
CONCEPTUAL SPECIFICATION
Q5
Equipment/system description
The Q5 is the quadrupole in the matching section following Q4. It must have a 70 mm aperture to allowing to
reach values of β* in the IP of the order of 10 cm. The two apertures are independently powered; it replaces the
present 56 mm aperture MQM, making use of the MQY used in the LHC.
Layout Versions
LHC sectors concerned
CDD Drawings root names (drawing storage):
V X.X
S1-2, S4-5, S5-6, S8-1
TBD
TRACEABILITY
Project Engineer in charge of the equipment
G. Kirby
WP Leader in charge of the equipment
E. Todesco, G. L. Sabbi
Committee/Verification Role
Decision
Date
PLC-HLTC/ Performance and technical parameters
Configuration-Integration / Configuraration, installation
and interface parameters
TC / Cost and schedule
Rejected/Accepted
Rejected/Accepted
20YY-MM-DD
20YY-MM-DD
Rejected/Accepted
20YY-MM-DD
Rejected/Accepted/Accepted
pending (integration studies, …)
20YY-MM-DD
Final decision by PL
Distribution: N. Surname (DEP/GRP) (in alphabetical order) can also include reference to committees
Rev. No.
X.0
Date
20YY-MM-DD
Description of Changes (major changes only, minor changes in EDMS)
Description of changes
This document is uncontrolled when printed. Check the EDMS to verify that this is the correct version before use
EDMS NO.
1366554
REV.
1.0
VALIDITY
DRAFT
REFERENCE : XXX-EQCOD-ES-XXXX
1
CONCEPTUAL DESCRIPTION
1.1
Scope
The Q5 is the quadrupole in the matching section following Q4. It must have a 70 mm aperture to allowing
to reach values of β* in the IP of the order of 10 cm. The two apertures are independently powered; it
replaces the present 56 mm aperture MQM, making use of the MQY presently used in the LHC at 4.5 K.
1.2
Benefit or objective for the HL-LHC machine performance
The large aperture of this magnet (70 mm) allows reaching a beta function in the IP of the order of
10 cm.
1.3
Equipment performance objectives
This magnets will provide an integrated gradient of 680 Tm, with 200 T/m in the transverse plane
and a 3.4 m lenght, with operational temperature of 1.9 K.
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EDMS NO.
1366554
REV.
1.0
VALIDITY
DRAFT
REFERENCE : XXX-EQCOD-ES-XXXX
TECHNICAL ANNEXES
2
PRELIMINARY TECHNICAL PARAMETERS
2.1
Equipment Technical parameters
Table 1: Equipment parameters
Characteristics
Aperture
Number of apertures
Distance between apertures at 1.9 K
Cold mass outer diameter
Shell thickness
Integrated gradient
Magnetic length
Gradient
Peak field
Current
Temperature
Loadline margin
Overall current density
Stored energy per meter (two apertures)
Differential inductance per meter
Stored energy (two apertures)
Differential inductance
Superconductor
Strand diameter
Cu/No Cu
RRR strand / RRR cable
Superconductor current density at 9 T, 1.9 K
Number of strands per cable
Cable bare width
Cable bare mid thickness
Keystone angle
Insulation type
Insulation thickness radial
Insulation thickness azimuthal
Number of layers
Number of turns
Cable unit length (one pole)
Coil physical length
Magnet physical length
Cold mass weigth
Heat exchanger hole diameter
Heat exchanger angle
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Units
mm
mm
mm
T
m
T/m
T
kA
K
(%)
A/mm2
MJ/m
mH/m
MJ
mH
mm
A/mm2
mm
mm
degrees
mm
mm
m
m
m
t
mm
degrees
Value
70
2
194
495
10
680
3.4
120
7.6
4.5
1.9
20
370/530
0.440
22
1.5
75
Nb-Ti
0.735/0.475
1.25/1.75
>150 / >70
1990
22/34
8.3/8.3
1.285/0.845
2.16/1.05
0.080
0.075/0.080
4
74=16+21+17+20
160/380
3.6
3.8
7
60
90
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EDMS NO.
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REV.
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VALIDITY
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REFERENCE : XXX-EQCOD-ES-XXXX
Heat exchanger distance from centre
Fx (per octant)
Fy (per octant)
Fz (whole magnet)
Stress on the mid-plane
Cold bore thickness
Gap cold bore to coil
Fringe field on the cryostat outer surface
mm
MN/m
MN/m
MN
MNP
mm
mm
mT
95
We reuse the present MQY, lowering the operational temperature from 4.5 to 1.9 K and increasing
the operational gradient from 160 T/m to 200 T/m. The work will consist in adapting the present cold
mass for 1.9 K operation, and possibly designing and building the new cryostat.
2.2
Operational parameters and conditions
They will operate under a peak heat load due to the debris shower of 0.8 mW/cm3, 20 MGy of
radiation dose, and will need a cooling power of 10 W (7 W at nominal plus 50% margin).
2.3
Technical and Installation services required
Table 2: Technical services
Domain
Electricity & Power
Cooling & Ventilation
Cryogenics
Control and alarms
Vacuum
Instrumentation
Requirement
6 kA circuit
1.9 K cooling through heat exchangers
10 W cooling power per magnet (7 W operational plus 50% margin)
Voltage taps for quench detection
Table 3: Installation services
Domain
Civil Engineering
Handling
Alignment
2.4
2.5
Requirement
Cold mass alignment in the cryostat within 0.1 mm (TBC) and 1 mrad
(TBC)
P & I Diagrams
Reliability, availability, maintainability
If the magnet is not providing the integrated field, the nominal optics cannot be provided. Failure of
the magnet could be bypassed by special optics with significant performance loss. Lower gradient will
correspond to lower collision energy. A lower than specified cooling power can limit the peak
luminosity to values lower than nominal. A lower than specified radiation resistance can break the
magnet before the gathering 3000 fb-1 in HL-LHC.
2.6
Radiation resistance
The equipment is designed to withstand 25 MGy.
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EDMS NO.
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2.7
List of units to be installed and spares policy
4 cold masses to be installed, 2 per side at IP1 and IP5. Spare cold masses already available.
3
PRELIMINARY CONFIGURATION AND INSTALLATION CONSTRAINTS
3.1
Longitudinal range
From 175.8 m to 179.6 m from the IP.
3.2
Volume
495 mm diameter and 3.4 m length: 0.65 m3.
3.3
Installation/Dismantling
The zone D2-Q4-Q5 needs to be dismanteled.
4
PRELIMINARY INTERFACE PARAMETERS
4.1
4.2
Interfaces with equipment
Electrical interfaces
Table 4: Circuits to be generated
New circuit description
RQ5.B1L1
RQ5.B2L1
RQ5.B1R1
RQ5.B2R1
RQ5.B1L5
RQ5.B2L5
RQ5.B1R5
RQ5.B2L5
5
COST & SCHEDULE
5.1
Cost evaluation
Circuit LHC code
name (if known)
Approx. current
rating (if known)
Approx. voltage
rating (if known)
6 kA
6 kA
6 kA
6 kA
6 kA
6 kA
6 kA
6 kA
Project code 91111
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Template EDMS No.: 1311290
EDMS NO.
1366554
REV.
1.0
VALIDITY
DRAFT
REFERENCE : XXX-EQCOD-ES-XXXX
5.2
Conceptual schedule
Table 5: Conceptual schedule
Phase
2012
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
Test at 1.9 K
Engineering design of cold
mass modifications and
cryostat
Assembly of five units
Test
Installation
6
TECHNICAL REFERENCE DOCUMENTS
 Future magnet report
7
APPROVAL PROCESS COMMENTS FOR VERSION X.0 OF THE CONCEPTUAL SPECIFICATION
7.1
PLC-HLTC / Performance and technical parameters Verification
Comments or references to approval notes. In case of rejection detailed reasoning
7.2
Configuration-Integration / Configuraration, installation and interface parameters
Verification
Comments or references to approval notes. In case of rejection detailed reasoning
7.3
TC / Cost and schedule Verification
Comments or references to approval notes. In case of rejection detailed reasoning
7.4
Final decision by PL
Comments or references to approval notes. In case of rejection detailed reasoning
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