movements of the low beta quadrupoles
DESCRIPTION
Movements of the low beta quadrupoles. D. Missiaen. Realignments operations Vertical and Roll angle position Tranversal position. Realignments. Vertical position : calculation principle. Points in the cavern calculated in Summer 2009 and considered as fixed - PowerPoint PPT PresentationTRANSCRIPT
MOVEMENTS OF THE LOW BETA QUADRUPOLES
D. Missiaen
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LBOC - 21/11/2011 D. Missiaen
-Realignments operations-Vertical and Roll angle position- Tranversal position
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LBOC - 22/11/2011
IR Date reasons1 August 2009 General Survey2 January 2010 General Survey
5 August 2009 General Survey
February 2011 Tilt pb on Q3-Q2LQ2 and Q3R also moved in V
On right side major incident
8 January 2010 General Survey
February 2011 Tilt pb on Q2 and Q1LQ1 and Q2R
D. Missiaen
Realignments
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LBOC - 22/11/2011
Points in the cavern calculated in Summer 2009 and considered as fixed Relative movements measured with permanent monitoring system D.
Missiaen
Vertical position : calculation principle
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LBOC - 22/11/2011 D. Missiaen
IR1- vertical
Global tendancy to go upwards Realignment ot be envisaged for Q3 and Q2L and Q2 and Q3R
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LBOC - 22/11/2011 All within +-0.2 mrad – No degradation D.
Missiaen
IR1- Roll angle
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LBOC - 22/11/2011 D. Missiaen
IR2- vertical
Very stable except Q1R2
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LBOC - 22/11/2011 Very stable – No degradation D.
Missiaen
IR2- Roll angle
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LBOC - 22/11/2011 D. Missiaen
IR5- vertical
Q2L is a bit strange – otherwise rather stable
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LBOC - 22/11/2011 After correction fo 2011 : OK D.
Missiaen
IR5- Roll angle
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LBOC - 22/11/2011 D. Missiaen
IR8- vertical
Tendancy to go upwards on the Left side – Right is rather stable
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LBOC - 22/11/2011 D. Missiaen
IR8- roll angle
Q3 and Q2L are a bit far
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LBOC - 22/11/2011
In IR 1 and 5, 2 points in the SU gallery were calculated in Summer 2009 and considered as fixed
In pt 2 and 8, calculation is fixed on Q1 and Q3 on each side. For this purpose new sensors, independant from triplets, have been installed beginning 2011D.
Missiaen
Transversal position : calculation principle
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LBOC - 22/11/2011 D. Missiaen
IR1- transversal
Slight degradation - Rotation of many magnets especially Q2L
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LBOC - 22/11/2011 D. Missiaen
IR2- transversal
Very small movements
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LBOC - 22/11/2011 D. Missiaen
IR5- transversal
Relative degradation on the Left side. Ok on right side
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LBOC - 22/11/2011 D. Missiaen
IR8- transversal
Very few data ….. But seems to be stable
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LMC - 02/03/2011
Absolute Vertical measurements will be done during the Winter TS No movement will be done until we have the results IP1 :
V : Q3 and Q2 on each side to be lower H : rotation of Q2L
IP2 V : Q1R to be lowered H : nothing
IP5 V : Q3L to be lowered H : all magnets on the L side
IP8 V : Q3 and Q2L to be lowered, roll angle to be adjusted H : nothing
D. Missiaen
Movements proposed