Status Report on the Alignment Activities at SLAC

1
Status Report on the Alignment Activities at SLAC

• Catherine Le Cocq, Brian Fuss, Robert Ruland
• Stanford Linear Accelerator Center,
• Stanford, CA, USA

The Stanford Linear Accelerator Center is
operated by Stanford University for the U.S.
Department of Energy.
2
Metrology Department Goals

• Support SLAC physics experiments.
• Guide all surveying and mapping efforts at SLAC.
• Promote accelerator alignment technologies inside
  and outside the laboratory.
• http//www.slac.stanford.edu/grp/met

3

• Current Experiments
• PEP II http//www.slac.stanford.edu/accel/pepii
• E158 http//www.slac.stanford.edu/exp/e158
• SPEAR 2 http//www-ssrl.slac.stanford.edu
• Future Developments
• SPEAR 3 http//ssrl.slac.stanford.edu/spear3
• LCLS http//www-ssrl.slac.stanford.edu/lcls
• GLAST http//www-glast.stanford.edu
• NLC http//www-project.slac.stanford.edu/lc/nlc

4
SLAC/SSRL Site
SPEAR
LCLS
PEP II e- injector
ESA
FFTB
NLCTA
PEP II e injector
BSY
ESB
Not to scale!
5
PEP II BABAR
6
SPEAR Mapping-Fiducialization-Assembly
7
Future
Far hall
Undulator
Near hall
Clean Room
Tower
Grid
8
Instrumentation Studies

• Classical Surveying Instruments
• Trackers / Total Stations
• Leveling
• Gyrotheodolites
• Others Devices
• Offset
• Tilt
• Straightness

9
Model / Software Developments

• Network Analysis LEGO
• Approximate Coordinates Determination
• New Type of Observation
• Error Checking
• Visualization Tool SIMS
• Software Packaging WinGEONET
• Others Refraction Studies

10
Mapping Effort

• GPS 3 Leica SR-530 receivers

Epoch of ITRF2000 and NAD83 2002.36

• GIS MicroStation v8 with GeoGraphics

11
Conclusion