Difference between revisions of "Particle Detection B"

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=== Lecture 5: Low to mid frequency noise: suspension wire and mirror thermal noise, coatings, monolithic suspensions ===
 
=== Lecture 5: Low to mid frequency noise: suspension wire and mirror thermal noise, coatings, monolithic suspensions ===
  
 +
'''All the groups should study all the topics until the Fluctuation-Dissipation Theorem.'''
 +
 +
The chapter ‘Thermal noise of pendulum’ should contain (group 3):
 +
* the simple harmonic oscillatior
 +
* the features of the pendulum
 +
* the pendulum thermal noise
 +
 +
 +
The chapter ‘Thermal noise of substrate’ should contain (group 2):
 +
* the thermal noise of continuous system
 +
* different kinds of substrate thermal noise: Brownian thermal noise, thermo-elastic noise, thermo-refractive noise.
 +
 +
 +
The chapter ‘Thermal noise of coating’ should contain (group 1):
 +
* the thermal noise of continuous system
 +
* why coating thermal noise is the dominant noise in the mirror thermal noise
 +
 +
All the material can be found in the SURFdrive folder at this
 +
 +
Date to hand in assignment: '''May 8th'''
  
 
=== Lecture 6: Low to high frequency noise: quantum noise, laser (power), squeezing ===
 
=== Lecture 6: Low to high frequency noise: quantum noise, laser (power), squeezing ===

Revision as of 12:37, 28 April 2020

Put here all relevant material for students

To do

  • Email to students with Zoom details
  • Be more specific about the way of grading (Niels)

Guidelines

Lecture format:

  • Divide each lecture in 2 (or 4) topics,
  • Ask the students to write lecture notes of 4-6 pages of a topic in groups of 3 students,
  • Derivation of equations in an appendix
  • A template of the lecture notes for each topic will be provided.

Exam:

  • Your written lecture notes
  • Each group takes lecture notes on 1 (or 2) topic(s) they were not involved in, and will present this in 15 minutes to the rest of the group.
  • Each group will get a total number of points which can be subdivided over the different students.


Groups

Groups of 3 students each to work on the assignments.

  • Group 1: Tjip, Leon, Alessia
  • Group 2: Marjolein, Barbara, Nigel, Niels
  • Group 3: Anastasis, João, Maricke


Lectures

Lecture 1: Intro and Power Spectral Density

The Intro should contain (group 1):


The PSD chapter should contain (group 2 & 3)

Date to hand in assignment: Wednesday April 6


Lecture 2: Gaussian beam, Fabry-Perot cavities

The chapter ‘Gaussian beam’ should contain (group 3):

  • definition and features of Gaussian beams (slides 2-12)
  • Higher-order modes (slides 13-16)


The chapter ‘Optical cavities: fields amplitudes’ should contain (group 2):

  • definition of optical cavity (slide 17)
  • mathematical computations of the involved fields (slides 18-20, 22)


The chapter ‘Optical cavities: features and properties’ should contain (group 1):

  • cavity features: FSR, HWHM, Finesse, etc. (slides 21, 23-25)
  • mathematical computation of the stability criterion (slide 28)


All the material can be found in the SURFdrive folder at this |link

Date to hand in assignment: 15th April

Lecture 3: Interferometry (general, Michelson) and Interferometer for GW detection (power and signal recycling)

The chapter ‘Fabry-Perot cavity’ should contain (group 2):

  • Frequency response of the cavity (slides 2-6)


The chapter ‘Interferometry’ should contain (group 2):

  • Definition of interferometry (slide 7-8)


The chapter ‘Interferometers’ should contain (group 1):

  • Different topologies of interferometers (slides 9-14)
  • Details about Michelson interferometer (slide 15-19, 22)


The chapter ‘GW detectors’ should contain (group 3):

  • Topology, power recycling configuration, signal recycling configuration (slides 20-25)


All the material can be found in the SURFdrive folder at this link

Date to hand in assignment: April 21st

Lecture 4: Low frequency noise: seismic and Newtonian noise, suspension systems

The chapter ‘Seismic Noise’ should contain (group 3):

  • definition of Seismic noise
  • technique for the reduction of seismic noise (free-falling IFO, damped harmonic oscillator, vibration isolation)


The chapter ‘Suspension system of Virgo’ should contain (group 2):

  • description of the Virgo suspension system (Superattenuator, inverted pendulum, MultiSAS)


The chapter ‘Suspension system of LIGO’ should contain (group 1):

  • description of the LIGO suspension system

All the material can be found in the SURFdrive folder at this link

Date to hand in assignment: April 28th

Lecture 5: Low to mid frequency noise: suspension wire and mirror thermal noise, coatings, monolithic suspensions

All the groups should study all the topics until the Fluctuation-Dissipation Theorem.

The chapter ‘Thermal noise of pendulum’ should contain (group 3):

  • the simple harmonic oscillatior
  • the features of the pendulum
  • the pendulum thermal noise


The chapter ‘Thermal noise of substrate’ should contain (group 2):

  • the thermal noise of continuous system
  • different kinds of substrate thermal noise: Brownian thermal noise, thermo-elastic noise, thermo-refractive noise.


The chapter ‘Thermal noise of coating’ should contain (group 1):

  • the thermal noise of continuous system
  • why coating thermal noise is the dominant noise in the mirror thermal noise

All the material can be found in the SURFdrive folder at this

Date to hand in assignment: May 8th

Lecture 6: Low to high frequency noise: quantum noise, laser (power), squeezing

Lecture 7: Sensing & control and/or future detectors

Literature

APPLICATIONS OF CLASSICAL PHYSICS, 2012-2013 Version of Textbook by Roger D. Blandford and Kip S. Thorne:

For copyrighted material we use a password protected link to Surfdrive