Skordis amp F Cerutti loss input by E Quaranta R Bruce and S Redaelli Protection screen design with P Fessia L Favre P A Thonet 292013 Collimation Working Group ID: 792155
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Slide1
DOSE TO WARM MAGNETS
E. Skordis & F. Ceruttiloss input by: E. Quaranta, R. Bruce and S. RedaelliProtection screen design with: P. Fessia , L. Favre, P. A. Thonet
2/9/2013 Collimation Working Group
E. Skordis
1
Slide2IR3:
THE TCAPD ROLE(@7 TeV)2/9/2013 Collimation Working GroupE. Skordis2
Slide3IR3 Geometry and
Sixtrack Lossmap profileBeam 1
MBW.C6L3
TCAPA.6L3
MQWA.CE5L3
MQWA.E5L3
TCAPD.6L3
MBW.B6L3
MBW.A6L3
TCSG.5L3
TCP.6L3
Z (m)
Counts
Average interaction depth: 47
μ
m
Average interaction longitudinal position: 14.9 cm
All
particles are impacting the
inner jaw.
2/9/2013 Collimation Working Group
E. Skordis
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Slide4MBW Peak Dose profile [I]
Beam 1
MBW.C6L3
TCAPA.6L3
MQWA.CE5L3
MQWA.E5L3
MBW.C6L3
MBW.B6L3
TCAPD.6L3
MBW.B6L3
MBW.A6L3
TCSG.5L3
Beam
1
Beam
1
obviously the TCAPD plays no role
MBW.A6L3
TCP.6L3
2/9/2013 Collimation Working Group
E. Skordis
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Slide5MBW.C6L3
Beam 1
MBW.C6L3
TCAPA.6L3
MQWA.CE5L3
MQWA.E5L3
MBW.B6R
7
TCAPD.6L3
MBW.B6L3
MBW.A6L3
TCSG.5L3
Beam
1
Beam 2 @ 6.5
TeV
MBW Peak Dose profile [II]
(per proton lost)
2/9/2013 Collimation Working Group
E. Skordis
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Slide6MQWA.E5L3 Peak Dose profile
Beam 1
the TCAPD halves the dose
2/9/2013 Collimation Working Group
E. Skordis
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Slide7MQWA.E5L3 Peak Dose profile
Beam
1
MQWA.E5R
7
Beam 2 @ 6.5
TeV
(per proton lost)
2/9/2013 Collimation Working Group
E. Skordis
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Slide8MQWA.D5L3 Peak Dose profile
Beam 1
2/9/2013 Collimation Working Group
E. Skordis
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Slide9MQWA.C5L3 Peak Dose profile
Beam 1
the most impacted one!
following the TCSG
2/9/2013 Collimation Working Group
E. Skordis9
Slide10MQWA.5L3 Peak Dose profile
Beam 1
2/9/2013 Collimation Working Group
E. Skordis
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Slide11MQWA.B5L3 Peak Dose profile
Beam 1
2/9/2013 Collimation Working Group
E. Skordis
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Slide12MQWA.A5L3 Peak Dose profile
Beam 1
2/9/2013 Collimation Working Group
E. Skordis
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Slide13MQWA.E
4L3 Peak Dose profileBeam
12/9/2013 Collimation Working Group
E. Skordis
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Slide14Conclusions
The TCAPD halves the peak dose in the MQW directly protected (MQWA.E5L3)However for the most impacted one (MQWA.C5L3), following the TCSG, the reduction is limited to ~ 30%The effectiveness of a dedicated shielding, to be embedded in the magnet, is under study (See next part)2/9/2013 Collimation Working GroupE. Skordis
14
Slide15IR7:
Possible protection screen effect(@6.5 TeV)2/9/2013 Collimation Working GroupE. Skordis15
Slide16MBWA - MBWB Peak Dose profile
Beam 2
MBW.B
MBW.A
TCAP
MQWA.E5R7
MQWA.D5R7
2/9/2013 Collimation Working Group
E. Skordis
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Slide17MBWA - MBWB Peak Dose profile
MBW.A6R7
MBW.B6R7
Beam 2
Beam 2
Normalization: 1.15 10
16
p (50 fb
-1
)
MBW.A6R7 with Flanges
Beam 2
MBW.B6R7
With Flanges
Beam 2
2/9/2013 Collimation Working Group
E. Skordis
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Slide18MBWA - MBWB Peak Dose profile
MBW.A6R7
Flanges + Protection
MBW.B6R7 Flanges + Protection
Beam 2
Beam 2
MBW.A6R7 with Flanges
Beam 2
MBW.B6R7
With Flanges
Beam 2
2/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16
p (50 fb
-1
)
Slide19MBWB Dose 2d cross section at maximum
No protectionDose (MGy)
2/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 1016 p (50 fb-1 )
Slide20MBWB Dose 2d cross section at maximum
With protectionDose (MGy)
2/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 1016 p (50 fb-1 )
Slide21MQWA.E5R7 Peak Dose Profile
Beam 2
Beam 2
Old Model
With Flanges
2/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16
p (50 fb
-1
)
Slide22MQWA.E5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16 p (50 fb-1 )
Slide23MQWA.D5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
23
Normalization: 1.15 10
16 p (50 fb-1 )
Slide24MQWA.C5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16 p (50 fb-1 )
Slide25MQWA. 5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16 p (50 fb-1 )
Slide26MQWA.B5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
26
Normalization: 1.15 10
16 p (50 fb-1 )
Slide27MQWA.A5R7 Peak Dose Profile
Beam 22/9/2013 Collimation Working Group
E. Skordis
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Normalization: 1.15 10
16 p (50 fb-1 )
Slide28MQWA.E4R7
Peak Dose ProfileBeam 22/9/2013 Collimation Working Group
E. Skordis
28
Normalization: 1.15 10
16 p (50 fb-1 )No protection was added to this model
Protection Is needed due to comparable Peak dose with MQWA.E5R7
Slide29MQWA.E5R7
Dose 2d cross section2/9/2013 Collimation Working GroupE. Skordis
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Slide30MQWA.E5R7
Dose 2d cross section2/9/2013 Collimation Working GroupE. Skordis
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Slide31MQWA.E5R7
Dose 2d cross section2/9/2013 Collimation Working GroupE. Skordis
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Slide325770
5670
2310
1780
1670
50
70
2030
2130
2230
1950
50
110
500
110
1250
720
370
210
290
570
4550
640
1290
Values are in
pJoule
/proton lost in the collimators
MQWA.E Energy Deposition on
varius
elements
2/9/2013 Collimation Working Group
E. Skordis
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60
2020
90
With Protection
Slide33Temperature Increase in protective Elements
2/9/2013 Collimation Working GroupE. Skordis33
MBW
MQW-front
MQW-mid
MQW-Top/Bot (
GeV/p)1.6
5.9
4.7
2.8
(Kg)
3.2
12.8
8.7
14
Temp Increase (°/s)
0.055
0.050
0.059
0.022
MBW
MQW-front
MQW-mid
MQW-Top/Bot
1.6
5.9
4.7
2.8
3.2
12.8
8.7
14
Temp Increase (°/s)
0.055
0.050
0.059
0.022
Slide34Conclusions
The protection screen for the MBWs provides a peak reduction of a factor of 3For the MQWs the effect is again a reduction of a factor of 3, however, increasing the radius of the front cylindrical screen and increasing the length of the inner protection could improve performanceDesign to be finalised (Cabling)2/9/2013 Collimation Working GroupE. Skordis34