Elena Quaranta Working Group on Advanced Collimator Materials July 21 st 2014 BE BEAM DEPARTMENT Outline Overview of present LHC collimator materials Post LS1 secondary collimator material RampD ID: 783958
Download The PPT/PDF document "Status of Lhc collimator material R&am..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Status of Lhc collimator material R&D
Elena
Quaranta
Working Group on Advanced Collimator MaterialsJuly 21st 2014
BE
BEAM
DEPARTMENT
Slide2Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond compositeMolybdenum-Diamond composite
Molybdenum-Graphite composite
Review of the testsSummary
Slide3Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide4Materials for LHC collimatorsAdColMat
- 21/7/2014
Elena Quaranta4
CFC (AC-150-K)
R4550 graphite
Copper OFEInermet180
Molybdenum
Glidcop Al-15Silver-Diamond
Molybdenum-Copper-DiamondCopper-DiamondMolybdenum-GraphiteTungsten-Rhenium
Already used in collimators active jaw
Already used for collimators, but not in the active jaw
R&D
TCP/
TCS
TCDI
TCLP
TCT
-
-
TCP/
TCS
TCP/
TCS/TCT
TCP/
TCS
TCP/
TCS/TCTTCT
Type Material
Slide5CFC AC-150KAdColMat
- 21/7/2014
Elena Quaranta5
Main limitations:
Currently used as TCPs and TCSGs active jaw material
Developed by
Tatsuno
(Japan)Composition :
Graphite flakesCarbon fibersDensity: 1.67 g/cm3
Poor electrical conductivity (0.18 MS/m)
RF Impedance induced beam perturbations
Limited Radiation Hardness
Reduced Lifetime for LHC operations
N
eed for replacing degraded Collimators
Slide6Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide7Collimator material R&D
R&D focused on
Metal Matrix Composites combine the properties of Diamond and Graphite (
high k, low CTE
low r and)
with those of Metals (σel)
AgCD
and MoCD are limited by, respectively, low melting temperature and difficulty to produce in large size and machine.
CuCD
MoCD
AgCD
MoGr
AdColMat
- 21/7/2014
Elena Quaranta
7
Materials investigated
are:
Silver-Diamond
(
AgCD
)
Copper-Diamond
(
CuCD
)
Molybdenum
-Diamond
(
MoCD
)
Molybdenum-Copper-Diamond
(
MoCuCD
)
Molybdenum
-Graphite
(
MoGr
).
Slide8Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide9Composition
:
60%v diamonds (90% 100
µm, 10% 45 µm)39%v
Cu powder (45 µm)1%v B powder (5 µm)
Copper-Diamond composite
BC “bridge” stuck on CD surface.
No CD graphitization
Developed by
RHP-Technology (Austria)
No diamond degradation
Thermal (
~490 Wm
-1
K
-1
) and electrical conductivity (
~12.6 MSm
-1
)
No direct interface between Cu and CD (lack of affinity). Partial bonding bridging assured by Boron Carbides limits mechanical strength (
~120
MPa
).
Cu low melting point (
1083 °C) CTE increases significantly with T due to high Cu content (from ~6 ppmK-1
at RT up to ~12 ppmK-1 at 900 °C)AdColMat - 21/7/2014Elena Quaranta9
L
imitation for collimator!
Slide10Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide11Molybdenum-Diamond composite
AdColMat - 21/7/2014
Elena Quaranta11
Low
melting phase (Cu) limiting operational temperature
Poor thermal properties (k=155 W/mK)Expensive raw materials and difficult sample machining
Why adding
Mo? Thermal stability (low CTE), mechanical strength, good affinity with C.Composition
& main production parameters: 40%v synthetic diamonds (45 µm)25%v Cu powder (45 µm)
35%v Mo powder (5 µm)
Powders pre-cleaning under H
2
-N
2
atmosphere at
600°C
RHP: 30 min at 1200°C, 30
MPa
applied pressure, reducing H
2
-N
2
atmosphere at 10
-4 mbar
MoCuCD: co-developed by and (Italy) during 2010-2011.
Slide12Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide13MoGR
: co-developed by and (Italy) during 2011-2012
Molybdenum-Graphite composite
AdColMat - 21/7/2014
Elena Quaranta13
Why switching to
graphite
? Low CTELow
densityHigh thermal conductivity High melting (degradation) pointLower cost (with respect to diamond)
Use solid state r
eaction
to
obtain strong Mo
2
C-graphite
interfaces:
2Mo + C => Mo
2
C
Mo
2
C:
stable
, electrically conductive.
The high content of Mo2C and the low strength of graphite however are limiting the material robustness …
Slide14MoGRCF
: co-developed by and (Italy) since 2012.
Molybdenum-Graphite composite
AdColMat - 21/7/2014
Elena Quaranta14
Advantages
of Carbon
Fibers
:Mechanical strengthThermal conductivityAlong with MoC1-x ,
catalyze graphitization process
Addition
of
mesophase
pitch-base
carbon
fibers
Liquid Phase Spark Plasma Sintering (>
2500°
C)
Slide15MG: composition and production
AdColMat - 21/7/2014
Elena Quaranta15
Basic composition
& main production parameters:
40%v
natural
graphite flakes (Asbury)20%v short carbon fibers (300 µm
, Cytek DKD)20%v long carbon fibers (3 mm,
Granoc XN-100-03Z), blended20%v
Mo
powder (
5 µm
)
Powders pre-cleaning under H
2
-N
2
atmosphere
at
600°
C
RHP: complete melting of Mo
2C at ~2600°C, 35 MPa applied pressure (in steps), reducing H2-N2
atmosphere at 10-4 mbar.MG 5220S plateGraphite and molybdenum powder
Slide16Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide17Summary of the tests (1)AdColMat
- 21/7/2014
Elena Quaranta17
Characterization
AC-150KCuCD
MG 3110PThermo-physical properties
Density
LFA (cp, k, diffusivity)DIL (α)
EmissivityElectrical properties
Electrical conductivity(SigmaTest v2.069)
!! If interested,
d
o not hesitate to ask for the values!!
Slide18Main results of the testsAdColMat - 21/7/2014
Elena Quaranta
18
Properties
CFC
CuCD
MoGr
r
[
g/cm
3
]
1.67
5.33
2.65
a
y,z
(RT
to 1200° C
)
[10
-6
K
-1
]-1.32
7.8
<1.3
a
x
(RT to 1200° C)
[
10
-6
K
-1
]
9
-
7.9
k
y,z
(RT)
[
W/
mK
]
220
490
>770
k
x
(RT)
[
W/
mK
]
55
-
85
s
y,z
(RT)
[
MS/m]
0.18
12.6
1.1
s
x
(RT)
[
MS/m]
0.04
-
0.3
Slide19AdColMat - 21/7/2014Elena Quaranta
19
Characterization
AC-150K
CuCDMG 3110
PMechanical properties
Elastic matrix constants
Flexural strength (σfl) * * *
Compressive strength *Dynamic
Outgassing
On-going
Coating
-
-
Scheduled
Summary of the tests (II)
with
Hopkinson
bar
@
PoliTo
(Italy)
@
GrindoSonic
(Belgium)
Slide20AdColMat - 21/7/2014Elena Quaranta
20
Characterization
AC-150K
CuCDMG-3110P
Irradiation30 MeV protons
(KI, Russia)
26 MeV C-ions (KI, Russia)200 MeV proton + spallation neutron (BNL, USA)
On-goingOn-goingU-ions (GSI, Germany)Au-ions (GSI, Germany)
On-goingOn-going
On-going
(on MG 5220S)
Summary of the tests (III)
Slide21Beam time: 13
th
-23rd July
On-Line monitoring and Post-M
ortem analysis on CFC, CuCD and MG 5220S samples are ON-GOING to assess property degradation under Au ions irradiation.
EuCARD2 - WP11
:Collimator Materials for fast High Density Energy Deposition
.Au24+
irradiation at GSIAdColMat - 21/7/2014Elena Quaranta21
Many thanks to M. Tomut and GSI material research group
Slide22Outline
Overview of present LHC collimator materials
Post LS1 secondary collimator: material R&D
Copper-Diamond composite
Molybdenum-Diamond composite
Molybdenum-Graphite compositeReview of the tests
Summary
Slide23SummaryAdColMat
- 21/7/2014
Elena Quaranta23
Different materials investigated to
replace CFC active jaw of secondary collimators for system upgrade
CuCD and MoGRCF
are the most performing
materials so farSeveral tests (thermo-physical, mechanical, irradiation) performed/on going on present and possible future collimator materials
Slide24Summary – what is still missing?AdColMat
- 21/7/2014
Elena Quaranta24
CFC
:EmissivityFlexural test (with strain gauges)
Dynamic testsCuCD
:
EmissivityFlexural test (with strain gauges)Dynamic testsElastic constantsCompressive strengthOutgassing
MoGr:Flexural test (with strain gauges)Dynamic testsElastic constantsCompressive strength
Slide25Thank you
for your attention
Slide26Backup slides
Slide27AdColMat - 21/7/2014Elena Quaranta
27
Numero
Placca
ID
Stampo
%Vol Mo% Vol GR
%Vol Fibre Corte (CY)% Vol Fibre Lunghe (GRA)
%Vol
Altro
T (C)
t (s)
P (Mpa)
Atmosphere
Data
Densita’ Teorica (g/cm3)
Densita’ (g/cm3)
Compat-tazione
Cond
Elettrica
(MS/m)
Cond
Termica
(W/
mK)Resistenza a Flessione (MPa
)1MG-1220-A70x55 mm2060200022001200350.1 mbar, 97%-N2, 3% H2Jun-123.91213.6894.07%0.6124059
2
MG-1130-A70x55 mm
20
40
40
0
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
Jun-12
3.9121
3.65
93.30%
0.41
200
45
3
MG-1140-A
70x55 mm
20
40
20
20
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
Jun-12
3.9121
3.65
93.30%
0.98 (centro)
315
53
4
MG-1350-A
70x55 mm
20
20
30
30
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
Jun-12
3.9121
3.53
90.23%
0.3
200
37
4-Bis
MG-1360-A
70x55 mm
20
20
30
30 Separata
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
Jul-12
3.9121
3.73
95.35%
0.42
205
77.5
5
MG-1411-B
ø80H4
20
30
20
20 Separata
10% CD 3 µm
2200
1200
35
10
-3
mbar, vacuum
05/02/2013
3.8218
3.66
95.77%
0.27
139
49
6
MG-1571-B
ø80H4
20
50
0
20 Separata
10% CD 3 µm
2200
1200
35
10-3 mbar, vacuum
05/02/2013
3.8218
3.68
96.29%
0.41
187
43
7
MG-1280-B
ø80H4
20
60
0
18 Separata (+2% Si)
0
2200
1200
35
10-3 mbar, vacuum
05/02/2013
3.9463
3.7394.52%0.52
199
57
8
MG-1270-D
ø80H4
20
60
0
20 separata
0
2400
1200
35
-
-
3.9121
-
-
-
-
9
MG-1690-A
ø90H4
20
25
55
0
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
09/03/2013
3.9121
3.5186
89.94%
0.21
150
28.4
10
MG-1110-A
ø90H4
20
40
20
20 separata
0
2200
1200
35
0.1 mbar, 97%-N
2
, 3% H
2
09/03/2013
3.9121
3.6935
94.41%
1.1 centro, 0.5 lati
367
74.5
10/1
MG-1110-A
ø90H420402020 separata022001200350.1 mbar, 97%-N2, 3% H226/03/20133.91213.6994.32%0.52--10/2MG-1110-Aø90H420402020 separata022001200350.1 mbar, 97%-N2, 3% H226/03/20133.91213.7395.35%0.51--10/3MG-1110-Aø90H420402020 separata022001200350.1 mbar, 97%-N2, 3% H226/03/20133.91213.794.58%0.5--10/4MG-1110-Aø90H420402020 separata022001200350.1 mbar, 97%-N2, 3% H226/03/20133.91213.794.58%0.5245-10/5MG-1110-Cø90H420402020 separata023001200350.1 mbar, 97%-N2, 3% H212/04/20133.91213.7194.83%0.48--10/6MG-1110-Dø40H420402020 separata024001200350.1 mbar N213/04/20133.91213.7495.60%0.88 centro, 0.62 lati--10/7MG-1110-Eø90H420402020 separata024201200350.1 mbar N226/04/20133.91213.6894.07%0.99 centro, 0,5 lati--10/8MG-1110-Eø90H420402020 separata024201200350.1 mbar N226/04/20133.91213.6894.07%0.92 c, 0.5 lati--10/9MG-1110-Eø90H420402020 separata024201200350.1 mbar N226/04/20133.91213.6693.56%0.90 c, 0.5 l--10/10MG-2110-Fø90H420402020 separata025601200350.1 mbar N226/04/20133.91212.78*Mo2C flow out - No compaction available0.957207360mm-1MG-1110-Gø60H22.820402020 separata01692*1200350.1 mbar N206/10/20133.91213.7295.09%0.62706560mm-2MG-1110-Hø60H22.820402020 Separata01735 *1200350.1 mbar N231/10/20133.91213.897.13%0.7 60mm-3MG-1110-Jø60H22.120402020 Separata01775*1200350.1 mbar N205/11/20133.91213.7896.62%0.7125 60mm-4MG-1110-Kø60H22.520402020 Separata01805*1200350.1 mbar N213/11/20133.91213.7395.35%0.8 80mm-5MG-1110-Lø80H17.520402020 Separata01920*400350.1 mbar N229/11/20133.91213.525790.12%1.022 (parte fusa)--80mm-6MG-1110-Mø80H17.520402020 Separata0 350.1 mbar N205/12/20133.91213.692.02%1.005/0.9518085? mm-7MG-1110-N 350.1 mbar N3 90mm-8MG-1110-Pø90H5.520402020 Separata02000600350.1 mbar N403/02/20143.723.65 1.16/0.7 90mm-9MG-3110-Qø90H5.2520402020 Separata02005350350.1 mbar N505/02/20143.722.62Mo2C flow out - No compaction available1.00 (centro)/0.92(periferia) 8090mm-10MG-4110-Pø90H16.520402020 Separata0 350.1 mbar N507/02/20143.52.669 1.13(centro)/1.12(metà)/0.96(bordo)90 (from LFA @CERN)85
Many plates have been produced so far…
Standard ID to
identify them uniquely
!
Slide28NomenclatureAdColMat
- 21/7/2014
Elena Quaranta28
MG # # # # A
M
aterial
C
omposition
Production cycle
Molybdenum
Graphite
%v Mo or Mo
2
C
(final)
# = 0…9 => each
digit corresponds to initial* component content in composite
*first digit correspond to: %v
in
Mo
if no melting
%
vfin Mo2C if melting with Mo2Cflow out%v Gr%v CF%v other elements(A…Z)Info about:Tcycletcyclepatmosphere
Slide29Where to access the info…AdColMat
- 21/7/2014
Elena Quaranta29
DFS folder: G:\Departments\EN\Projects\MME_MechanicalEngineering\Elena.Quaranta\Materials\
Nomenclature legend:
…\MG_legend.xlsxNew classification of MG plates: …\MoGRCF_Summary_newName.xlsx
Slide30Nomenclature: some exampleAdColMat
- 21/7/2014
Elena Quaranta30
MG 1110 A
20%v Mo, 40% GR, 40% CF, 0% othersA=1200s at 2200°C, 35MPa, H
2-N2 at 10-4 mbar
ρ=3.7 g/cm
37.6%v Mo2C, 40% GR, 40% CF, 0% othersF=2560°C for1200s,
35MPa, N2 at 10-4 mbarρ=2.78 g/cm3MG 2110 F
Mo2C melt and flowed out for the first time
6.2%v Mo
2
C
,
40% GR, 40% CF, 0% others
Q
=2005°C (pyrometer) for 350s,
35MPa,
N
2
at 10
-4
mbar
ρ=2.62 g/cm
3MG 3110 Q
6%v Mo2C, 40% GR, 40% CF, 0% others
P=2000°C (pyrometer) for 600s, 35MPa, N2 at 10-4 mbarρ=2.67 g/cm3MG 3110 P Fully characterized: outstanding electrical and thermal properties, low density!
Slide31Last produced plate: 23/06/2014AdColMat
- 21/7/2014
Elena Quaranta31
MG 5220 S
Ø 90mm x 24.29mm => THICK plate!
≈4%v Mo2
C, 96%
v graphite + CFT=2600°C (pyrometer) for 600s, 35MPa, N2 at 10-4 mbarρ
=2.65 g/cm3
Slide32Irradiation campaign at BNL
ON-
GOING irradiation and post-irradiation studies
on Molybdenum, Glidcop, CuCD
, MoGRCF
200 MeV proton and spallation neutron
(by ~120 MeV protons)
irradiation @BLIP
Mo-Graphite
Graphite
C/C
Proton beam profile
Energy deposited in target
Proton beam profile
Spallation Neutron profile
AdColMat
- 21/7/2014
Elena Quaranta
32
Slide33Irradiation campaign at BNL
28
MeV proton irradiation for very localized proton-induced damage @Tandem van de Graaff
X-Ray Diffraction studies @
NSLS
(100-200
keV
X-rays)
AdColMat - 21/7/2014Elena Quaranta33