cngs overview konrad elsener
DESCRIPTION
CNGS Overview Konrad Elsener. OUTLINE 1. The CNGS beam 2. Schedule 3. Status 4. Summary. 1. The CNGS beam – main components. 10 cm long graphite rods. Helium tanks. 400 GeV protons from SPS, fast extracted ( 2 x 10.5 m s, D t=50 ms). 50 ms. - PowerPoint PPT PresentationTRANSCRIPT
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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CNGS Overview
Konrad Elsener
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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OUTLINE
1. The CNGS beam2. Schedule3. Status4. Summary
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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400 GeV protons from SPS,fast extracted ( 2 x 10.5 s, t=50 ms)
10 cm long graphite rods
1.The CNGS beam – main components
Helium tanks
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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150 kA
180 kA
Helium tanks
1. The CNGS beam – main components
50 ms
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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= 2.45 m steel tube, t = 18 mmsurrounded by 50 cm concrete;- NO COOLING -vacuum 1 mbarentrance window 3 mm Tiexit window 50 mm steel
Helium tanks
1. The CNGS beam – main components
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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V = 1 litre air-filled ionisation chambers
(17->37 fixed + 1 moveable detector in both muon detection chambers)
800 m 100 m 1000m 67 m
Helium tanks
TBID(SEM monitor)
1. The CNGS beam – main components
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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2. Schedule
10 July 2006
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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3. Status
construction:completed
commissioning:done
CNGS operational !
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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3. Status
construction:completed
commissioning:done
CNGS operational !
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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3a. Status
BPM: not o.k.BTV: ? not aligned ?target: not aligned w/beam not aligned w/hornhorns: polarity wrong, timing wrong, alarm (conductivity)data logging: missing spillsdecay tube pumps: one “dead”ventilation: not o.k.smoke detection: problems.... ....
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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- Hardware commissioning / cold check-outBeam instrumentations Feb. – April 2006Power suppliesMagnets (incl. polarities)Vacuum system(April / May: Target / Horn exchange excercises “real”)
- “Dry runs” April – May 2006TimingControls InterlocksBeam permitMagnets (current & polarities)
- Commissioning with beam 2006: weeks 28, 30 and 33
3. Status
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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3c. Status
week 28 week 30 week 33
1x1013
total number of protons used: 7.8x1015
(equivalent to 1 hour of CNGS running with nominal beam)
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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how did we use these “few” protons ?
... answers throughout this workshop ...
3. Status
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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• Put some plots here, ex. Horn current vs. time, or ex. T40 temp. vs. time
3. Status
week 33M
D -
cy
cle
ch
an
ge
d
MD
– n
o b
eam
acc
es
s
operation
horn current extraction 1
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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MD
– n
o b
eam
acc
es
s
horn current extraction 1
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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PRELIMINARYmore on Friday, 8 Sept. (Edda’s talk)
Quality check – muon monitors(example: Pit 1 - horizontal plane)
data <> Fluka
3. Status
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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... other problems ... (construction)
February 2006: safety shutter -> not on safe power (!)decay tube air-inlet “local controls”
March 2006: helium purity BAD (weather changed...)
30 June 2006: hadron stop water leak (flowmeters)
... more problems ... (commissioning)
MKE kickers not working reliably – fixed “last minute”
beam availability from the PS + SPS (PS septum change, etc.)
radioactive cooling water from the TED (beam dump in extr. line)
two out of 4 air-cooling units in the service gallery have a fault
details of TBID readout still need to be understood (electronics?)
3. Status
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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... on the sunny side: “everything works”!
-> was wonderful to see how smoothly the proton beam came on
-> impressive (to me) to see the tools at work for proton beam analysis
-> little trouble moving/turning the target
-> horn + reflector are working reliably
-> beam interlock system is a success
-> controls systems were rarely a cause of trouble (“dry runs” paid off!)
-> it was great to get so many additional muon monitors in week 29 !
3. Status
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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4. Summary
CNGS project was approved in December 1999
Civil Engineering – Equipment design – production- installation phases lasted 6 years
CNGS completed on budget and within the 2002 schedule.
two of our “main worries” at NBI2005 are gone (target / horns ready and installed in time)
the two other “main worries” remain(target chamber heating/cooling calculations,
decay tube heating + stresses )
CNGS is operational – but the toughest part is still ahead !
Lesson learned: hardware commissioning for “services” !!!
05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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05 Sept 2006 CNGS Overviewpresented by K. Elsener to NBI2006
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1.3E+13
1.35E+13
1.4E+13
1.45E+13
1.5E+13
1.55E+13
1.6E+13
1.65E+13
1.7E+13
1.75E+13
1.8E+13
8/25/20060:00:00.000
8/25/200612:00:00.000
8/26/20060:00:00.000
8/26/200612:00:00.000
8/27/20060:00:00.000
8/27/200612:00:00.000
8/28/20060:00:00.000
8/28/200612:00:00.000
8/29/20060:00:00.000
148600
148700
148800
148900
149000
149100
149200
149300
149400
149500
149600
p.o.t. (1st extr.) horn current [A]