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Nordic Particle Accelerator School, NPAS2015
from
Monday, 17 August 2015 (08:00)
to
Sunday, 23 August 2015 (18:00)
Monday, 17 August 2015
08:45
Welcome by Prof. Anders Karlsson
-
Anders Karlsson
(
Lund University / LTH
)
Welcome by Prof. Anders Karlsson
Anders Karlsson
(
Lund University / LTH
)
08:45 - 09:00
Room: E2311
09:00
Introduction to Synchrotron Light Sources
-
Pedro Fernandes Tavares
(
MAX-IV Laboratory
)
Introduction to Synchrotron Light Sources
Pedro Fernandes Tavares
(
MAX-IV Laboratory
)
09:00 - 09:45
Room: E2311
The electromagnetic radiation produced by accelerated charged particle beams, known as synchrotron light, is a key tool in the characterization of a wide range of matter at the molecular and atomic level. Worldwide about 70 facilities have been built over the past 40 years to produce synchrotron radiation and deliver it to experiments across a wide range of sciences such as physics, chemistry, medicine/biology, and engineering. After briefly introducing the application of synchrotron radiation for the study of materials, interfaces, and surfaces, the lecture will give an overview how highly intense synchrotron radiation is generated by beams of charged particles in high-energy accelerators. In order to set the stage for the rest of the school, the physics of the radiation emission process and the dynamics of the charged particle beams will be briefly introduced as well as the types of accelerators that serve as the most intense radiation sources. Several such accelerators are available on site and will serve as examples.
09:45
Accelerator Physics Introduction 1/2
-
Francesca Curbis
(
Max-IV Laboratory
)
Accelerator Physics Introduction 1/2
Francesca Curbis
(
Max-IV Laboratory
)
09:45 - 10:30
Room: E2311
This course will describe 1) Basic relations (units, kinetic energy, 4-momentum, relativistic particle); 2) Lorentz force & Maxwell’s equations; 3) types of accelerators and electron guns; 4) Oscillating EM fields in linacs; 5) Circular accelerators; 6) Synchrotrons and phase stability; 7) Magnets (dipoles, quadrupoles, sextupoles) and 8) focusing properties [NO equation of motion, NO dynamics].
10:30
Coffee Break
Coffee Break
10:30 - 10:45
Room: E2311
10:45
Accelerator Physics Introduction 2/2
-
Francesca Curbis
(
Max-IV Laboratory
)
Accelerator Physics Introduction 2/2
Francesca Curbis
(
Max-IV Laboratory
)
10:45 - 11:45
Room: E2311
This course will describe 1) Basic relations (units, kinetic energy, 4-momentum, relativistic particle); 2) Lorentz force & Maxwell’s equations; 3) types of accelerators and electron guns; 4) Oscillating EM fields in linacs; 5) Circular accelerators; 6) Synchrotrons and phase stability; 7) Magnets (dipoles, quadrupoles, sextupoles) and 8) focusing properties [NO equation of motion, NO dynamics].
11:45
Introduction to Spallation Source
-
Mats Lindroos
(
ESS AB
)
Introduction to Spallation Source
Mats Lindroos
(
ESS AB
)
11:45 - 12:30
Room: E2311
The European Spallation Source is a Partnership of 17 European Nations committed to the goal of collectively building and operating the world’s most powerful long-pulse source of neutrons with a peak brightness of at least 30 times greater than any of today’s similar facilities. Thus, the ESS will provide the much-desired transformative capabilities for interdisciplinary research in the physical and life sciences. The ESS accelerator high level requirements are to provide a 2.86 ms long proton pulse at 2 GeV at repetition rate of 14 Hz. This represents 5 MW of average beam power with a 4% duty cycle on target. This lecture will introduce the principle of spallation using proton acceleration and based on simple examples. The accelerator components and functions will be described to support the following school lectures on the topic of accelerator technology.
12:30
Lunch Break
Lunch Break
12:30 - 14:00
Room: E2311
14:00
Exercises, Accelerator Physics
-
Stephen Molloy
(
European Spallation Source ESS AB
)
Galina Skripka
(
Max-IV Laboratory
)
Tessa Charles
(
Monash University (Australia)
)
Exercises, Accelerator Physics
Stephen Molloy
(
European Spallation Source ESS AB
)
Galina Skripka
(
Max-IV Laboratory
)
Tessa Charles
(
Monash University (Australia)
)
14:00 - 15:45
Room: E2311
15:45
Coffee break
Coffee break
15:45 - 16:00
Room: E2311
16:00
Visit Old Max-Lab
-
Olivia Karlberg
(
Max-IV Laboratory
)
Visit Old Max-Lab
Olivia Karlberg
(
Max-IV Laboratory
)
16:00 - 17:00
Room: E2311
Tuesday, 18 August 2015
08:45
Accelerator Physics Optics & Tools
-
Sverker Werin
(
Max-IV Laboratory
)
Accelerator Physics Optics & Tools
Sverker Werin
(
Max-IV Laboratory
)
08:45 - 10:30
Room: E2311
This course will describe general electro-magnetic fields and matrices, phase space, beam transport as basis for accelerator science. It will introduce the function and use of dipole and quadruple magnets Magnets (D, Q) and Radio-frequency cavities. This course will describe particle motion in magnetic fields, single particle, betatron motion, dispersion, beams, TWISS, Liouville, resonances. Tools to study those parameters will be introduced.
10:30
Coffee Break
Coffee Break
10:30 - 10:45
Room: E2311
10:45
Accelerator Physics Optics & Tools
-
Sverker Werin
(
Max-IV Laboratory
)
Accelerator Physics Optics & Tools
Sverker Werin
(
Max-IV Laboratory
)
10:45 - 12:30
Room: E2311
This course will describe general electro-magnetic fields and matrices, phase space, beam transport as basis for accelerator science. It will introduce the function and use of dipole and quadruple magnets Magnets (D, Q) and Radio-frequency cavities. This course will describe particle motion in magnetic fields, single particle, betatron motion, dispersion, beams, TWISS, Liouville, resonances. Tools to study those parameters will be introduced.
12:30
Lunch Break
Lunch Break
12:30 - 14:00
Room: E2311
14:00
Exercise, computer simulations
-
Tessa Charles
(
Monash University (Australia)
)
Teresia Olsson
(
Max-IV Laboratory
)
Olivia Karlberg
(
Max-IV Laboratory
)
Exercise, computer simulations
Tessa Charles
(
Monash University (Australia)
)
Teresia Olsson
(
Max-IV Laboratory
)
Olivia Karlberg
(
Max-IV Laboratory
)
14:00 - 16:00
Room: E2311
16:00
Instruction for project and examination
-
Anders Karlsson
(
Lund University / LTH
)
Instruction for project and examination
Anders Karlsson
(
Lund University / LTH
)
16:00 - 17:00
Room: E2311
Wednesday, 19 August 2015
08:45
Beam Diagnostics for Particle Accelerators
-
Maja Olvegård
(
Uppsala University
)
Beam Diagnostics for Particle Accelerators
Maja Olvegård
(
Uppsala University
)
08:45 - 10:30
Room: E2311
Beam diagnostic instruments are the eyes of the accelerator, the best - or even the only - tools that we have to monitor and control the beam. This lectures will give the basics of "what, where and how" of beam diagnostics. Different types of accelerators calls for different diagnostic methods. We will discuss the most important beam parameters that generally are monitored, a few common detector types, and how to analyze and meet the needs of each and every accelerator. Types of parameter: position, intensity, transverse and longitudinal profile, energy. important concepts: resolution and accuracy, invasive or non-invasive, single-shot or multi-shot, common techniques: Faraday cup, pick-up, scintillation and OTR screens, wire scanner, SEM-grid, laser-based instruments.
10:30
Coffee Break
Coffee Break
10:30 - 10:45
Room: E2311
10:45
Accelerator Components and Technologies
-
Christine Darve
(
European Spallation Source ESS AB
)
Accelerator Components and Technologies
Christine Darve
(
European Spallation Source ESS AB
)
10:45 - 11:30
Room: E2311
This course will describe the different components and technologies used to operate particle accelerators, from the Radio-Frequency Quadrupole, Drift Tube Linac and supraconducting cavities. We will use the example of the ESS proton accelerator and the LHC machine to support the description of accelerator environment and interfaces (e.g. RF systems, cryogenics, vacuum, water, radiation environment). An overview of the life-cycle of accelerator components will illustrate the integration of key-components, from their fabrication, testing, installation to their operation in the tunnel. On this basis, we will also talk on the instrumentation, which are needed to condition, monitor and control the signals to operate safety an accelerator.
11:30
RF Sources
-
Carlos Martins
(
European Spallation Source
)
RF Sources
Carlos Martins
(
European Spallation Source
)
11:30 - 12:30
Room: E2311
The RF sources are power systems that convert electrical power from a standard electrical power grid into RF microwave power, at the desired frequency and amplitude, in order to excite the RF cavities, which in turn will generate the electrical fields that will accelerate the particle beam. The related power chain consists of different components which are very specific and unique at a worldwide scale: the high voltage modulators (power supplies) convert AC low/medium voltage electrical power into high voltage power compatible with RF amplifiers; RF amplifier tubes (klystrons, tetrodes, IOT’s, etc.) convert electrical power into RF microwave power; RF distribution networks (waveguides, circulators, couplers, etc.) transmits the RF power from amplifiers to the final load (RF cavities). In addition to the power chain described above, a sophisticated control system (LLRF) is required in order to assure that the RF power is generated, transmitted and delivered to the loads according to the requirements derived from the accelerator application like duty cycle (Pulsed or Continuous Wave), precision, stability, etc.
12:30
Lunch Break
Lunch Break
12:30 - 14:00
Room: E2311
14:00
Visit Max-IV and ESS
-
Joel Andersson
(
Max-II Laboratory
)
Christine Darve
(
European Spallation Source ESS AB
)
Visit Max-IV and ESS
Joel Andersson
(
Max-II Laboratory
)
Christine Darve
(
European Spallation Source ESS AB
)
14:00 - 17:00
Room: E2311
Thursday, 20 August 2015
08:45
Magnet Technology
-
Franz Bødker Franz Bødker
(
Danfysik
)
Magnet Technology
Franz Bødker Franz Bødker
(
Danfysik
)
08:45 - 10:30
Room: E2311
This course will describe the magnets needed in a particle accelerator. We will start out by looking into the basic functions of a classic electromagnet with magnetic flux generated by a current and guided by a magnetic iron frame. Then we will go into details with the basic functions of the bending dipole such as the required field strength and field quality. This will lead to a description on how the iron pole is shaped in order to obtain the desired magnetic performance. Quadrupole magnets and higher order correction multipoles will also be discussed. Magnet properties like hysteresis, eddy currents and iron saturations will be mentioned in order to understand some of the non-linear complexities of electromagnets. On this basis we will talk about the more complicated accelerator magnets such as fast ramped and pulsed magnets like kicker and bumper magnets. High field superconducting magnets and permanent magnet driven green alternatives will also be considered. The tools used for magnetic design and testing of accelerator magnets will be mentioned. Examples will be given on different types of accelerator magnets that have been produced at Danfysik such as the compact MAX-Lab magnets with up to 13 different magnets in one shared iron yoke. The basic function of insertion devices used at free electron laser and synchrotron light facilities and for the generation of intense synchrotron light is illustrated by the multipole wiggler and undulators as compared to radiation from bending magnets. The basic function of high field wiggler is compared to high brilliance undulators and the general features of these devices will be described. Example will be shown of insertion devices like permanent wigglers, in-vacuum cryogenic undulators and the superconducting alternatives.
10:30
Coffee Break
Coffee Break
10:30 - 10:45
Room: E2311
10:45
Techniques of Vacuum and Basics of High Voltage
-
Pauli Heikkinen
(
Jyväskylä University
)
Techniques of Vacuum and Basics of High Voltage
Pauli Heikkinen
(
Jyväskylä University
)
10:45 - 12:30
Room: E2311
This course will describe: 1) Vacuum: Introduction to basic concepts and units; vacuum regions; residual gas: Maxwell - Boltzmann distribution for energy for residual gas (velocity distribution, average collision distance, molecular layer formation); 2) Basics of vacuum equipment (Pumping speed, conductance, hardware); 3) High voltage use (DC, AC): Forces due to electric and magnetic field (Electric rigidity); HV devices (conditioning, sparking, hardware).
12:30
Lunch Break
Lunch Break
12:30 - 14:00
Room: E2311
14:00
Exercise, Beam diagnostic, RF cavities and RF sources
-
Yogi Rutambhara
(
European Spallation Source
)
Maja Olvegård
(
Uppsala University
)
Anders Karlsson
(
Lund University / LTH
)
Christine Darve
(
European Spallation Source ESS AB
)
Exercise, Beam diagnostic, RF cavities and RF sources
Yogi Rutambhara
(
European Spallation Source
)
Maja Olvegård
(
Uppsala University
)
Anders Karlsson
(
Lund University / LTH
)
Christine Darve
(
European Spallation Source ESS AB
)
14:00 - 15:45
Room: E2311
15:45
Coffee Break
Coffee Break
15:45 - 16:00
Room: E2311
16:00
Project Progress
-
Anders Karlsson
(
Lund University / LTH
)
Project Progress
Anders Karlsson
(
Lund University / LTH
)
16:00 - 17:00
Room: E2311
Friday, 21 August 2015
08:45
Production of Synchrotron Radiation
-
Sverker Werin
(
Lund University
)
Production of Synchrotron Radiation
Sverker Werin
(
Lund University
)
08:45 - 10:10
Room: E2311
This course will describe Radiation, electromagnetic fields, relativity, bending magnet radiation, undulators, wigglers, coherence, bandwidth, diffraction, pulse lengths
10:10
Accelerating Protons
-
Christine Darve
(
European Spallation Source ESS AB
)
Accelerating Protons
Christine Darve
(
European Spallation Source ESS AB
)
10:10 - 10:30
Room: E2311
10:30
Coffee Break
Coffee Break
10:30 - 10:45
Room: E2311
10:45
Medical Application of Electron Accelerators
-
Lars Præstegaard
(
Aarhus University Hospital
)
Medical Application of Electron Accelerators
Lars Præstegaard
(
Aarhus University Hospital
)
10:45 - 11:45
Room: E2311
This course will describe 1) Short introduction to the basic theory of waveguides, cavities, and linear accelerators; 2) Rationale for radiation therapy (what is cancer, radiation damage, fractionation, therapeutic window); 3) Electron linacs for radiotherapy (beam optics, how to change the energy, and treatment head design).
11:45
Medical Application of Proton Accelerators
-
Lars Præstegaard
(
Aarhus University Hospital
)
Medical Application of Proton Accelerators
Lars Præstegaard
(
Aarhus University Hospital
)
11:45 - 12:30
Room: E2311
This seminar will present the following topics: - Basic theory of the proton cyclotrons (and recap. of proton synchrotrons) - Medical applications of isotope production - Rationale for hadron therapy (Bragg peak, dose distribution, skin dose, biological effectiveness). - Treatment delivery of hadron therapy (gantries, passive scattering, pencil beam scanning, lateral dose penumbra, uncertainties in hadron therapy).
12:30
Lunch Break
Lunch Break
12:30 - 14:00
Room: E2311
14:00
Applications to Particle Physics and Nuclear Physics
-
Erik Adli
(
Oslo University
)
Applications to Particle Physics and Nuclear Physics
Erik Adli
(
Oslo University
)
14:00 - 15:00
Room: E2311
The study the fundamental particles and the forces of nature is the reason particle accelerators were invented about hundred years ago. This field has driven the development of accelerator technology up to today. I will discuss the requirements that particle physics and nuclear physics impose on particle accelerator design, and I will review some of the major discoveries achieved by particle accelerator experiments
15:00
Pushing the frontiers
-
Erik Adli
(
Oslo University
)
Pushing the frontiers
Erik Adli
(
Oslo University
)
15:00 - 16:00
Room: E2311
The users communities continuously ask for improved accelerator parameters; higher beam energy, better beam brilliance and higher beam power. Clever accelerator physicists have throughout history invented new theory and better technology in order to overcome limitations in particle accelerator performance. In this tutorial we together go through a few of the main limitations of current accelerator technology and we discuss ideas and research aimed to overcome these limitations.
16:00
NPAS as a feeder to JUAS
-
Louis Rinolfi
(
Joint University Accelerator School
)
NPAS as a feeder to JUAS
Louis Rinolfi
(
Joint University Accelerator School
)
16:00 - 16:20
Room: E2311
Saturday, 22 August 2015
08:00
08:00 - 17:00
Room: E2311
Sunday, 23 August 2015
09:00
09:00 - 13:00
Room: E2311
13:00
Photos
-
Christine Darve
(
European Spallation Source ESS AB
)
Anders Karlsson
(
LTH
)
Anders Borgström
(
LTH
)
Heikkinen Pauli
Photos
Christine Darve
(
European Spallation Source ESS AB
)
Anders Karlsson
(
LTH
)
Anders Borgström
(
LTH
)
Heikkinen Pauli
13:00 - 13:20
Room: E2311