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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
Simulation and
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Measurements
Soren Prestemon
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Simulations: Measurements:
1. Dipole/quadrupole fields + 1. Dipole or quadrupole fields
2 Days
(cid:190) Code Magnet/Poisson (cid:190) Hall probe
2. Cavity modeling + 2. Microwave cavity
2 Days
(cid:190) Code Superfish (cid:190) Network analyzer
3. Synchrotron radiation + 3. Insertion device 2 Days
(cid:190) Code SynRad (cid:190) Hall probe
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Note: the simulation and measurement lab is 30% of your grade
Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
Simulation and
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Measurements
Soren Prestemon
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• Labwork is designed as 2-day exercise (lab+simulation)
(cid:190) Each exercise will require a written report
(cid:57)Lab reports for the first week (2 reports) are due Monday, Feb. 23;
(cid:57)Lab reports for the second week are due before the final exam
(cid:190) The last 2-day exercise will consist of the design of a storage ring
Measurement lab Computer lab
1a Dipole Field measurements Dipole/Quadrupole calculations
1b Quadrupole field measurements Dipole/Quadrupole calculations
2 Microwave cavity measurements Cavity simulation
3 Insertion device measurments Insertion device radiation properties Key
4 Design of a storage ring 1 1a-M
2 1a-C
Day\Group # 1 2 3 4 5 6 7 8
1/16/2005 Lab and Calculations Overview 3 1b-M
1/17/2005 1 2 3 4 5 6 7 8 4 1b-C
1/18/2006 2 1 4 3 6 5 8 7
5 2-M
1/19/2006 5 6 7 8 1 2 3 4
6 2-C
1/20/2006 6 5 8 7 2 1 4 3
1/23/2006* 7 8 5 6 7 8 5 6 7 3-M
1/24/2006 8 7 6 5 8 7 6 5
8 3-C
1/25/2006
Design of a Storage Ring
1/26/2006
1/27/2006*
* previous lab assignements due
Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
Course
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Introduction
Jeffrey Ball, ORNL, ae
Paul Cummings, Embry-Riddle Aeronautical U., ug
1 Molly Scannell, BNL, bs 5
Muhammad Jamil, Konkuk University, gs
Khalimov Mirkomal, Arifov Institue of Electronics, gs
Everette R. Martin, Fermilab, bsee
Anthony Bavuso, Jefferson Lab, bsee
Laurie Elizabeth (Elisa) Dowell, Naval Research Lab, msrs
Hannes Bartosik, Tech. University of Vienna, gs
6 Kristine Ferrone, Brookhaven National Laboratory, bsa
2 Jonah Weber, LBNL, bsee
Andres Gomez Alonso, U. Politecnica de Catalunya & CERN, gs
Danielle Sanzone, SLAC, bap
Sammie Garvin, George Mason University, bs
Ekaterina Danilova, ORNL, ms 7
Robert Hensley, Embry-Riddle Aeronautical University, ug
3
Nicola Pozzobon, University of Pisa , gs
Artur Paytyan, Fermilab, ms
Heritier Makamizile Mbo, Congo-Fr. Electric Company, gs
Mohammad Adil Khan, Kyungpook National University, gs
4 William Chase, Brookhaven National Lab, bsp 8
Valentina Previtali, Genova University & CERN, gs
Lukas Jagerhofer, Tech. University of Vienna, gs
Eric Tse, SLAC, bap
Lynn Garren, Fermilab, phd
Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
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Simulation and
Measurements
Soren Prestemon DDiippoollee//qquuaaddrruuppoollee eexxeerrcciissee
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Simulations: Measurements:
Dipole and quadrupole magnetic Dipole or quadrupole field measurements
system design Goal: Learn to assemble a model magnet
Goal: understand excitation curves, and a Hall probe; measure spatial field
saturation effects, purpose of profiles, excitation curves; understand
poles and yokes, field harmonics, current and current density, integrated
beam steering and focusing using fields, and beam steering or focusing
the code Magnet as a function of current
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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
IInnttrroodduuccttiioonn ttoo llaabb eexxeerrcciisseess::
Simulation and
Measurements
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Simulations: Measurements:
RF cavity simulation Pillbox cavity measurements
Goal: understand electric and Goal: Estimate base resonant frequency
magnetic fields that can exist in a from geometry of a cavity; understand
cavity; find resonant modes and fields excited by two antennas
frequencies, distinguish modes installed in the device; measure
from harmonics resonant curve and impact of
geometry on cavity tune
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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
IInnttrroodduuccttiioonn ttoo llaabb eexxeerrcciisseess::
Simulation and
Measurements
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Simulations: Measurements:
Synchrotron radiation generation Field measurements and characterization
Goal: understand the radiation of a wiggler magnet
characteristics associated with Goal: Using a Hall probe, understand
bending magnets, wigglers, and field characteristics and resulting
undulators, including spectral radiation properties of a wiggler;
range and photon beam evaluate impact of a wiggler on the
polarization electron beam (e.g. steering and
focusing)
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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
IInnttrroodduuccttiioonn ttoo llaabb eexxeerrcciisseess::
Simulation and
Measurements
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Design process:
Choose to design either a SR storage ring or a HEP machine
Choose basic design point: electron or proton energy, ring diameter
Choose realistic ring elements (dipole field strengths, quadrupole fields, etc)
Incorporate elements discussed during the course (particle sources,
accelerating structures, chromatic aberration correction, vacuum
components, etc)
Simulate performance using program BeamOptics: plot betatron functions,
perform particle tracking, modify design to yield reasonable lifetime
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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
SSiimmuullaattiioonn aanndd MMeeaassuurreemmeenntt LLaabb
GGooaallss
• The goal of the lab is to provide a hands-on
appreciation for the design, fabrication, and
measurements associated with some key
accelerator components
– The lab questions should be addressed as well as
possible, but above all we want you to understand the
issues involved
– You are free to do further measurements, play with
design modifications, etc
– An additional computer exercise (extra credit!) on
quadrupole focusing can be addressed in your spare
time – you would find it useful for the final project
… and ask questions!
Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
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Fundamental Accelerator Theory, Simulations and Measurement Lab – Arizona State University, Phoenix January 16-27, 2006
