Deployment Strategy Possible S ynergies with aC Coating P Cruikshank on behalf of TEVSC with many inputs from LIUSPS team LIUSPS 26 August 2015 Paul Cruikshank 1 Impedance Reduction Deployment ID: 797849
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Slide1
LIU-SPSImpedance Reduction:Deployment Strategy,Possible Synergies with a-C CoatingP. Cruikshank on behalf of TE/VSCwith many inputs from LIU-SPS team
LIU-SPS, 26 August 2015
Paul Cruikshank
1
Slide2Impedance Reduction DeploymentDeployment strategy is shaped by the following inputs:Needs & priorities for impedance reduction,Recommendation of C&S review to move a-C coating to LS3Output of scrubbing reviewAvoid to remove same object twice for impedance and a-CAvoid to reopen vacuum system twiceConflicts with YETS, EYETS, LS2 co-activities & transport.ALARA constraintsImpedance reduction technical solutionsOptimisation of costs & manpower.Validation of technical solution via pilot project
LIU-SPS, 26 August 2015
Paul Cruikshank
2
Slide3Impedance reduction in arcs – overview & needsLIU-SPS, 26 August 2015Paul Cruikshank3
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
Cells
% SPS
Chamber type
X-section (mm)
Form
Units /cell
Chamber (mm)
Chamber /cell
% cell
% SPS
84+12 Arc+DS
88.9
MBA
152 x 36.5
Rect
4
6660
26640
41.6
37.0
MBB
129 x 48.5
Rect
4
6640
26560
41.5
36.9
QF mag
152 x 38.3
Elipse1334633465.24.6QD magDia 83Round1334633465.24.6QF SSS152 x 36.5Ellipse1205220523.22.8QD SSSDia 83Round1205220523.22.863995100.088.9
P1
P2
☺
☺
Slide4Impedance reduction of SSSLIU-SPS, 26 August 2015Paul Cruikshank4
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
Displace 16 SSS
QF
per arc
Treatment underground or ex-situ
Several different chamber configurations
Provides access to QF & MBA
extremity
Priority 1
Priority 2
Displace 16 SSS
QD
per arc
Treatment underground or ex-situ
Several different chamber configurations
Provides access to QD and MBB extremity
Slide5SSS Impedance Reduction ConsiderationsAvoid LS2 co-activitiesTreat priority P1Early pilotLIU-SPS, 26 August 2015
Paul Cruikshank
5
1
2
3
4
5
6
Meyrin, P1 LHC
(magnet lift)
Prevessin
(magnet lift)
RF
(LS2)
TT40
ext
TT20
ext
Future dump?
(LS2)
Injection
Dump
TT60
ext
ECX5
BHA5
(magnet lift)
Heavy transport in arcs 3-4 and 4-5 during LS2 is restricted if
b
eam dump (civil engineering) goes ahead
→ Impedance reduction campaign of SSS
QF
& QF in
arc
s
3-4 & 4-5 during EYETS
→ Remaining 4
arc
s
in LS2.
→ Impedance reduction of SSS
QD
& QD could be applied in same way
Slide6Impedance reduction costs (without transport) LIU-SPS, 26 August 2015Paul Cruikshank6
Costs courtesy of
J.Perez
-Espinos
.
Transport
costs
are
included
in
a-C study (see later).
‘Working line’ cost in
r
ange 844k to 1213k
Slide7What about a-C coating?Awaiting SPS scrubbing review for needs & prioritiesa-C coating solution (ex-situ) validated on dipoles & quadsa-C cost estimate made for full and partial coating variantsSynergies between a-C & impedance reduction addressedBut,Until technical needs are confirmed, deployment options are numerous and inter-related.→ Assume a working line for impedance reduction→ Assume a working line for a-C coating LIU-SPS, 26 August 2015
Paul Cruikshank
7
Slide8a-C partial coating & impedance reductionWorking line for a-C coating (pending scrubbing review + validation long cathode) LIU-SPS, 26 August 2015Paul Cruikshank8
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
a-C
a-C
a-C
a-C
+
Imp’d
a-C
+
Imp’d
a-C
+
Imp’d
a-C
a-C
+
Imp’dIn-situMBBMBAMBAQFSSSMBASSSQDMBBMBBMBAMBASSSQFMBBIn-situIn-situIn-situEx-situEx-situEx-situEx-situIn-situ≤ LS2LS3 *ImplementationProposal
Slide9a-C & impedance reduction of SSSQF & QF in EYETS/LS2LIU-SPS, 26 August 2015Paul Cruikshank9
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
MBB
MBB
MBA
MBA
QF
SSS
MBA
SSS
QD
MBB
MBB
MBA
MBA
SSS
QF
a-C
+
Imp’d
→ Combined impedance reduction & a-C coating activity
→ Vacuum
system only opened once at QF/SSS
QF
zone
→
SSS transport costs are shared (16 SSS
QF
per arc)
→
In-situ a-C of QF to be studied & validated (pumping 63 m string)
→
Activity split between EYETS (2 arcs) & LS2 (4 arcs)→ Other VSC consolidations could be combined (sector valves, ion pumps)a-C+Imp’da-C+Imp’da-C+Imp’d
Slide10a-C factory optionsLIU-SPS, 26 August 2015Paul Cruikshank10
BA2 lift
BA3 lift
BA6 lift
BA4 crane
BA5 crane
Transit
Transit
aC
ex-situ factory
ECX/ECA5
TCC6
Other ?
aC
in-situ factory
aC
ex-situ factory
BHA5
Other ?
aC
ex-situ factory
B867 via BA3 & road
P1.8 via BA6 & road
B?? via road
Other ?
192 SSS
192 Quad
744 MB
Tunnel transport
Surface transport
Underground activity
Surface activity
aC
typical sequence:
Disconnect (
vac
+
mech
)
Transport
Clean +
aC
coat
Transport
Survey (
x,y,z,tilt) Reconnect (vac + mech Survey (smoothing)BaselineAdjacent quads can’t besimultaneously removed
Slide11a-C cost estimate details and variantsLIU-SPS, 26 August 2015Paul Cruikshank11
Many inputs from VSC, TE-MSC, EN-SU, EN-HE, LIU-SPS team
Slide12Cost for a-C variants, 29/04/2015 (full, partial, 1 arc):Preliminary totals
LIU-SPS, 26 August 2015
Paul Cruikshank
12
Working line is to implement a-C in one arc during LS2
Cost to
aC
coat QF and
SSS
QF
for
6 arc
s
~ 1220
kCHF
(400
kCHF
is transport)
Slide13Impedance reduction - PlanningEYETS starts in December 2016Manufacturing of new components must start early 2016 (~ 9 months duration)Impedance solutions need to be confirmed in coming monthsDetailed designs completed and validated by end of 201532 SSSQF to treat in 12 week intervention (my assumption)4 per week = 8 weeks2 weeks to complete first assembly
2 weeks to reclose/repump/debug.
Assume SSSQF to surface as valid pilot for remaining arcs and
aC
needs
Arcs 3-4 & 4-5 as working line
If via BA3, then SSS
QF
transport to
867
.
Will require ~ 50 m2 for activity, plus ~ 50 m2 for
handling
Not excluded that SSS
QF
treated underground (
eg
ECX5) if
aC
not requiredRetrofit of shielding or new
chambers depends on impedance resultsParallel activity in tunnel to treat QF & MBA extremity where required
Experience will dictate how to execute for future arcs
a-C coating needs not yet known…..LIU-SPS, 26 August 2015
Paul Cruikshank
13
Slide14Extensive SPS radiation campaign Feb 2013 for LS1:MB range 0.1 - 100 uSv/hr @ 40 cmQuad & SSS range 1 - 1000 uSv/hr @ 40 cmNeed to make detailed assessment for each SSSQF, SSSQD, QF, QD to treat Dose ‘cost’ for each item
to be treated – list to compile
Public road limitations < 5 uSv
/
hr
– otherwise ‘transport containment’ required
Avoid road
transport (minimize transport)
Impedance reduction - Radiation
considerations
LIU-SPS, 26 August 2015
Paul Cruikshank
14
Sextant 5
(best)
Sextant 1
(worst)
Slide15SummaryWorking line has been assumed for impedance reductionPriority 1 is SSSQF zone = 2 arcs is EYETS, 4 arcs in LS2SSSQF will cost 844 k to 1213 k (+400 k transport if no a-C)SSSQD will cost 130 k to 1116 k (+0k transport if combine with a-C in LS3)2 arcs in EYETS avoids LS2 co-activities and provides pilot.Working line has been assumed for a-C coatinga-C coating of SSSQF and QF for 6 arcs = 1220 kCHFPartial a-C coating of 1 arc in LS2 = 1763
kCHFPartial a-C coating of 6 arcs in LS3 = 4656 k
CHF Impedance reduction & a-C synergies
Deployment of both activities EYETS, LS2, LS3 seems compatible
Transport costs can be shared
Opening of vacuum system can be optimized
Many variants have been considered and costed
Changes to either working line with impact the other.
LIU-SPS, 26 August 2015
Paul Cruikshank
15
Slide16LIU-SPS, 26 August 2015Paul Cruikshank16Thanks for your attention !