SNS Survey, Alignment, & Metrology (SAM). Overview & History of Survey, Alignment, & Metrology, (SAM) Microns & Madness! The Role of SAM in the Installation & Alignment of a Beam Line. Joseph Error. Overview & History of SAM.
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SNS Survey, Alignment, & Metrology (SAM)
Overview & History of Survey, Alignment, & Metrology, (SAM)
Microns & Madness!
The Role of SAM in the Installation & Alignment of a Beam Line
SAM roles and responsibilities are complex, much more than most realize.
SAM interfaced with every partner lab & practically every group involved in the construction, installation, & alignment of the SNS Accelerator & Beam-lines. We still do!
From the removal of the first scoop of dirt, to the planning of a second target station, SAM played/s an important role.
Other ORNL Organizations
Drawing / Data Integration
R & D
Assistance to Other Labs & Organizations
Through our global survey network, drawing integration, & interfacing with scientists, engineers, etc., SAM is really the liaison that provides a focal point for Physics, Engineering, Conventional Facilities, & others.
SAM integrates all of their work into a unified coordinate system. Our task is not to reinvent the wheel, but in addition to alignment, we must make sure that one component cannot occupy the same space as another.
It is through this methodology that construction, installation & alignment work is performed correctly the first time.
How well does / did our integration work?Example: SAM Calculated and laid out the locations for over 15,000 bolts holes in support of component stands & other equipment. NOT ONE SINGLE BOLT HOLE HAD TO BE RELOCATED OR REDRILLED!
THE TIP OF THE ICEBERG!
QUALITY PRODUCT / ON-TIME / WITHIN BUDGET / SAFELY
Partner Labs Alignment Issues
SAM’s Principles for Alignment are unwavering!
All work actually performed, either alignment or work performed in support of others, must preserve the integrity and complex relationship between our global survey network and all other project entities.
THIS IS HOW PROJECTS ARE BUILT ON-TIME!
THIS IS HOW PROJECTS ARE BUILT WITHIN BUDGET!
If the mission is to build a quality product, on time, within budget, and safely, every project skill set has an important and significant role.
Few technical groups however, interface with so many entities as Survey, Alignment & Metrology Group (SAM).
SAM’s successes are really project successes. When SAM succeeds, everyone benefits and the project saves time, money, and headaches.
The Business of Measuring & Alignment!
“Microns & Madness”
What is Achievable?
Laboratory Conditions? (Controlled Environment)
What is Achievable?
Less Than Laboratory Conditions?
So We Ask the Question: What Is Really Achievable in the World of Modern Accelerator or Beamline Alignment?or…What alignment people world-wide refer to as ”Microns & Madness”
So, with respect to precision alignment, what is really achievable on an instrument line?
There really is no simple answer.
Alignment quality is a by-product of many factors.
The quality of aligned components can also change as conditions change.
Speaking in more generic terms however, component-to-component alignment of ±0.002 inches [±50 μm] is usually achievable with a high degree of confidence, and ±0.005 inch [±125 μm] over the length of the beam line.
Few technical professionals are really aware of the significant role modern survey & alignment plays in the construction of an accelerator. (long before any alignment work!)
From ground-breaking to beam operation and beyond, SAM is integrally involved.
What is even less clear is the significant SAM contribution to the construction, modifications & operation of instrument lines.
This presentation deals with the involvement of SAM in the construction and commissioning of an instrument line. A chronological step-by-step history is shown on the following pages.
Modern SAM is much more than alignment.
SAM provides a wealth of information (data, drawings, elevations) for designers, engineers, instrument scientists, & others.
At each phase of the project, SAM has a role.
SAM is part of an overall team concept where numerous technical & professional groups work together to construct an on-time, on-budget, fully functioning instrument line, & do so safely!
Design a preliminary network based on the previous assessments.
Install monuments and create an operational 3-Dimensional coordinate network.
Networks evolve as the instrument construction advances.