The T9 beam line for tests
Lau Gatignon, LHCb meeting, 10 March 2014
Lau Gatignon, 10 March 2014
The T9 beam line
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The East Area(PS)
Lau Gatignon, 10 March 2014
The T9 beam line
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The East Area Beams
(Schematic view - till 2012!)
IRRAD
T7 beam
(not used)
DIRAC
T9 beam
EASTB
N-target
EASTA
12 (15) GeV/c
T11: 3.6 GeV/c, 150 mrad
CLOUD
Lau Gatignon, 10 March 2014
The T9 beam line
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The East Area Beams
(Schematic view – From 2014!)
IRRAD
T9 beam
EASTB
N-target
EASTA
12 (15) GeV/c
T11: 3.6 GeV/c, 150 mrad
CLOUD
Lau Gatignon, 10 March 2014
The T9 beam line
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EXAMPLE OF A PS SUPER-CYCLE
Or e.g. :
The super-cycle can now be
re-programmed ‘on the fly’
(part of s.c.)
Lau Gatignon, 10 March 2014
The T9 beam line
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SOME TYPICAL PS CYCLES
User
Momentum
SFTPRO
14 GeV/c
–
Up to 3 1013
1.2 s
Need 2 to fill SPS *)
CNGS
14 GeV/c
–
Up to 3 1013
1.2 s
Need 2 to fill SPS *)
LHC
26 GeV/c
–
EASTA
24 GeV/c
0.4 s
2-3 1011
2.4 s
For T9+T10 tests + CLOUD
EASTB
24 GeV/c
0.4 s
1.2 1011
2.4 s
For new IRRAD facility
EASTC
24 GeV/c
0.4 s
Up to 5 1011
2.4 s
No longer needed
TOF
20 GeV/c
–
8 1012
1.2 s
–
1.5 1013
1.2 s
AD
Flat top Intensity
1.4 1011/bunch 1.2 s
MD
Lau Gatignon, 10 March 2014
Duration Comments
Only once per ~90 seconds
Variable parameters
The T9 beam line
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The supercycles proposed for 2014+
Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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East Area Test Beams
The T9 and T10 beam lines are mixed beams.
Their maximum flux is 106 per EASTA cycle.
Both beams are served from a common target,
together also with the T11 beam for CLOUD.
The flat top is 0.4 seconds.
The number of EASTA cycles is defined by the
physics coordinator, depending on the overall
schedule, but is normally 2 per super-cycle.
When CLOUD runs up to 3.
Each beam line is equipped with 1 (T10) or 2 (T9)
threshold Cerenkov counters, a scintillator and
a Delay wire chamber.
Parameter
T9
T10
Maximum momentum (GeV/c)
12
6
Production angle (mrad)
0
61.6
Beam length to ref. focus (m)
55.8
34.9
Beam height above floor (m)
2.50
2.505
Ang.acceptance Horiz (mrad)
Vertic (mrad)
±4.8
±5.8
±5.4
±13.9
87
224
Theor. momentum resol. (%)
0.24
0.24
Max. momentum band (%)
±10
±8
Magnification at ref. focus
1.0, 1.2
0.8, 0.6
Acc. Solid angle (msterad)
~2.5 1011
Protons on North target
Max. flux (depending on p, Q)
Lau Gatignon, 10 March 2014
The T9 beam line
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106
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Lau Gatignon, 10 March 2014
The T9 beam line
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Beam rates
p
p
For wide open collimators, i.e. Dp/p ≈ ±7.5%
Lau Gatignon, 10 March 2014
The T9 beam line
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Beam Composition
p
p
With electron enriched target (otherwise e± strongly reduced)
Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Monitoring the beam
Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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A Delay Wire
Chamber.
The upstream support
houses a 10 cm ∅
scintillator
Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
Threshold Cerenkov counter
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Lau Gatignon, 10 March 2014
The T9 beam line
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Required preparation steps
• Contact me in time with all questions. Organise a visit in T9.
We will then also fix details of the layout of your installation.
• All participants must have a dosimeter and the basic safety training
• Submit ISIEC form
• Let us know if you need X/Y tables. They need to be booked.
• Contact us if you need gas and also your FGSO if you need flammable gas
• Take appointment (well before run) for patrol right training,
2-3 persons will be authorised
• When your installation is ready contact B.Pichler for a safety visit
• Organise a beam training for the team at the start of your beam time
• Look at the East Area web page where you will find lots of useful details:
http://gatignon.web.cern.ch/gatignon/EastArea
Lau Gatignon, 10 March 2014
The T9 beam line
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