assembling the SC Link J Fleiter and A Ballarino 14052020 Scope The WP6a activity requires space at the surface in order to perform the integration of the MgB 2 cables inside the cryostat ID: 919311
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Slide1
Definition of space required for assembling the SC LinkJ. Fleiter and A. Ballarino
14/05/2020
Slide2ScopeThe WP6a activity requires space at the surface in order to perform the
integration of the MgB
2
cables inside the cryostat
, the connection of the
MgB
2
to the
Nb-Ti
cables at one SC Link termination
, the installation of the
DFH plus current leads
and
the splices between MgB
2
and HTS cables
at the other SC Link termination, the
electrical insulation of the splices
, the
routing and connection of the instrumentation wires
. In addition, the following operations will have to be performed:
R
eception
of
spools of cryostats and of MgB
2
cables – the latter prior to insertion in the cryostat, reception and temporary storage of sub-modules of DFHX and DFHM, re-spooling of final system with DFH connected;
Assembly and test the sub-components and of the final system, i.e. welding and soldering operations,
QA of welds,
pressure tests,
l
eak tests, HV
tests
(5 kV), electrical
continuity test
of instrumentation
Slide3Installation of MgB2 cable in cryostat, preparation of LTS termination, assembly of DFH and current leads
The space requirement consider the assembly of both Inner
T
riplets and Matching
S
ection SC Link systems The space is subdivided in four different volumes:Three working volumes:One terminal at each extremity called T1 and T2, One corridor linking T1 and T2A transport area adjacent to the corridorA loading and unloading area (near T1) A temporary storage area next T2
Corridor
T2
T1
W_2
L
_2
W_1
L
_1
W_c
L_c
H
_2
H_1
H_c
Transport area
Loading
area
Storage
Slide4Schematic working sequence
Sequence of work (not exhaustive):
Install a winch in T2
Bring the spooled cryostat to T1
Unwind the cryostat from T1
Remove the empty spool, bring the spooled cable to T1Insert the MgB2 cable assembly in the SC Link cryostat from T1Perform the HV tests after cable insertion [EDMS N. 2376026] Perform assembly of DFHM or DFHX at T2Perform Nb-Ti to MgB2 splices in T1 (for MSs) or in the corridor (for ITs)Install the SC Link transport frame (including its spool) at T1 and start winding the Link at T1Evacuate the spooled SC Link system from T1 and start the next one as from step b
Corridor
Cryostat, Cable in cryostat
Terminal
1
Terminal
2
Winch
DFH, current leads
Cable in spool
Cryostat in spoolLTS extension
Re spooling SC Link
Slide5Working sequence for
SC-Link
of MS
Terminal
1
Terminal
2
a. Install
winch in
T2
b. Bring
the spooled cryostat to T1
c. Unwind
the cryostat from T1, weld flanges on cryostat
Winch
Cryostat
Spooled cryostat
Empty spool of cryostat
d
)
Remove empty spool, bring spooled cable to T1
Spooled cable
e) Insert
cable in cryostat from T1
Empty spool of cable
Slide6Working sequence
for SC-Link of MS
f) Perform
dielectric test after cable insertion
g)
Perform assembly of DFHM at T2
h
)
Perform
MgB2 to
Nb-Ti
splices at
T1
i
)
Install
the SC
L
ink
transport frame (including its spool) at T1 and start winding the Link at T1
Assembly of DFHM
LTS splicing
Spooling
Sc
Link
j) Evacuate
the
SC link
Slide7Working sequence for
SC-Link
of
IT
Terminal
1
Terminal
2
a. Install the
w
inch in
T2
b. Bring
the spooled cryostat to T1
c. Unwind
the cryostat from T1
Winch
Cryostat
Spooled cryostat
Empty spool of cryostat
d
)
Remove
the empty
spool, bring spooled cable to T1
Spooled cable
e) Insert the
cable in
the cryostat
from T1
Empty spool of cable
Slide8Working sequence for
SC-Link
of
IT
f) Perform HV tests
after cable insertion
g)
Perform assembly of
DFHX
at T2
h
)
Perform LTS splices at
T1
i
) Install the SC
L
ink
transport frame (including its spool) at T1 and start winding
the SC
Link at T1
Assembly of DFHX
LTS splicing
Spooling
Sc
Link
j) Evacuate
the
SC link
Slide9Determination of volumes and services (1/2)
Terminal 1
shall be at least 16 m long, 8 m wide and 8 m height
Terminal 2
shall be at least 16 m long, 6 m wide and 6 m height
The corridor shall be 120 m long and 3 m wide and 4 m heightA temporary storage area, 16 m x 2 m, shall be adjacent to T2A loading port shall allow to load/unload the Spools or the SC Link system on a truck with a crane. The same crane shall be able to be used at T1Access door(s) to building shall be: H≥ 6m , W ≥ 4 mOverhead crane in the zone T1: loading port (≥ 10 t), height under hook ≥ 8 mOverhead crane in the zone T2: (≥ 5 t), height under hook ≥ 6 mCorridor shall be centered
wrt Terminal 1 and Terminal 2
Corridor
Cryostat, SC Link Cable in cryostat
Terminal
1
Terminal
2
W2=6m
L2=16 m
W1=8m
L1=16m
Wc
=3m
Lc
=120 m
H2
≥
6m
H1
≥
8
m
Hc
=4m
Wt
=3m
Ht=4m
Transport
(Un)Loading port near T1
Temporary Storage area
Ws
=2m
Slide10Determination of volumes and services (2/2)
Working
space at RT and protected from humidity, equipped with light
Transport area
used
to access Terminal 2 with material (from either Terminal 1 or loading port) and during spooling phases of SC Link (operation performed within one working day)Concrete floor with load capacity > 1 ton /m2 at T1, T2, corridor and transport areaPlanarity of the floor between T1, corridor and T2 (no stairs, no trench….), gaps shall be less than 5 mm The volumes shall be satisfy safety requirements and be equipped with fume detection systemsTerminal 1, Terminal 2, and the zone of the corridor where the DFHX will be assembled be equipped with fume extractorsElectricity outlets shall be available (230 V-16 A and 380 V-32 A) at each terminal T1 and T2 (three outlets at each terminal)