Java replacement for Win indows In Interface to Sim imulation of - - PowerPoint PPT Presentation

Java replacement for Win indows In Interface to Sim imulation of Errors

Geometric misalignments

Noé Fernández Álvarez

27/01/2017

Su Summary ry

• 1. Introduction to WISE geometric
• 2. WISE calculations
• 3. WISE usage
• 4. WISE’s output
• 5. Conclusions
• 6. WISE examples and results

Introduction o WISE geo

• WISE is composed by two main modules
• Magnetic errors
• Geometric errors
• It’s the new version of the software written in

Excel by P. Hagen

• Purpose: Calculate the misalignments of the

magnets inside the tunnel

• Provides the most recent data for the

misalignments

Misalgniments = dcryo + dmag

• Position of the magnets inside the cryostat was measured after the

assembly process

• The cryostat is not perfectly aligned and it moves in time
• The best estimation of the position for each magnet is the offset of

the magnet + offset the cryostat

• The error vector is D(i) = Dm(i) + Dc(i)

WISE Calculations: Conventions

Structure of the magnets

• Entry and exit point of

each magnets is measured

Coordinate system The entry point is .E (entrée) The exit point is .S (sortie)

WISE Calculations: Components

• dr = radial difference
• dl = longitudinal difference
• dv = vertical difference
• dt = tilt difference

Coordinate system

WISE Calculations: Output data

• Δx = avg (dRe ,dRs)

mean offset for the radial component

• Δy = avg (dVe, dVs)

mean offset for the vertical component

• Δs = avg (dLe,dLs)

mean offset for the longitudinal component

• ΔΨ = avg(dTe, dTs)

mean offset for the tilt

• ΔΘ = (dRs – dRe)/magnetic length rotation around x-axis
• ΔΦ= (dVs - dVe)/magnetic length rotation around y-axis
• S = Position of the magnet inside the tunnel
• Name = magnet name

WISE usage

• WISE is released on the afs directory

/afs/cern.ch/eng/lhc_online_model/pro/WISE

• It only needs one argument: path to the XML configuration file
• This configuration file is shared both by the geometric and the magnetic

modules

• The XML configuration file allows to configure different aspects of the

calculations and add filters to the data we want

• Example usage: sh WISE.sh /path/to/my/configuration.xml
• To run the geometric part, the option MAGNETSGEOMETRY must be

present in the ErrorSources element

WISE usage: XML configuration example

WISE usage: Available XML options

• MagnetsType: Select the

magnets we want to use (i.e.: MB, MBRB, MQ,…). By default it takes all of them

• Beam: Select the magnets

corresponding to the selected beam

• Sector: Select the magnets by

sector

• Uncertainty: Enables/disables

the usage of deterministic

• errors. Options: true/false

Full details for each parameter can be found HERE

WISE usage: Available XML options

• OutputName: Name for the output file
• PathToSaveOuputs: Defines the path to save the results
• ErrorSources: Defines which calculations must the program run
• MAGNETSGEOMETRY: Required to run the geometric part, generates the

alignment errors produced due to imperfections in the shape of magnets

• TUNNELMOVEMENTS: Generates the alignment errors due to the cryostat position

in the tunnel and it’s movements over the time Full details for each parameter can be found HERE

WISE’s output

• The output of the program for the geometric part depends on the

ErrorSources parameter

• MAGNETSGEOMETRY: Generates the misalignments for the magnets
• TUNNELMOVEMENTS: Includes the errors produced by the movements on

the cryostats

• A 6-component vector is produced for each option
• The components for MAGNETSGEOMETRY starts with M_ (M_DX, M_DY,…)
• The components for TUNNELMOVEMENTS starts with MA_ (MA_DX,

MA_DY…)

Output example

• TFS file with the errors

WISE’s output

• The output of the program is a TFS table with the chosen data
• It can be used in MADX thru the EALIGN command

Conclusions

• This tool fully replaces the old Excel geometric simulation software
• Can be run in any computer at CERN

WISE Examples

• 3 Examples are located in the afs
• /afs/cern.ch/eng/lhc_online_model/dev/WISE/geo-examples
• Example 1: Runs WISE extracting the misalignments for the magnets
• Example 2: Runs WISE extracting the misalignments both for magnets

and cryostats

• Example 3: Runs WISE extracting the misalignments for the magnets

and applying filters to the execution

WISE results

• WISE versions comparison : Web to compare the data from both

versions of WISE

WISE results

Dx component - magnets

WISE results

Dy component - magnets

WISE results

Ds component - magnets

WISE results

Tilt component - magnets

WISE results

Theta component - magnets

WISE results

Phi component - magnets

WISE results

Dx component - Cryostats

WISE results

Dy component - Cryostats

WISE results

Ds component - Cryostats

WISE results

Tilt component - Cryostats

WISE results

Theta component - Cryostats

WISE results

phi component - Cryostats