Particle Detection B

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):

• What do we measure with an interferometer?
  • First watch Kip Thorne's lecture: https://surfdrive.surf.nl/files/index.php/s/hmCWcFxSrilUeZy
  • Write notes according to slides 6 - 12: slides

• The effect of Gravitational Waves on test masses (mirrors)
  • See this Saulson lecture, this topic is covered from about minute 45 onwards: https://www.youtube.com/watch?v=m4IKvv0AqAI&list=PL04QVxpjcnjgs5aJ-BN3CRiMhJNyB1Ekr&index=4
  • You can also use Saulson Chapter 2: https://surfdrive.surf.nl/files/index.php/s/xATgIBO2OOEIM5o
  • Write notes according to slide 18: slides

The PSD chapter should contain (group 2 & 3)

• Sensitivity curves - Power Spectral Densities
  • Lecture Kip Thorne: https://surfdrive.surf.nl/files/index.php/s/5qrbQhf3foFNh5C
  • Saulson Ch4: https://surfdrive.surf.nl/files/index.php/s/rGu64pFLNai2Ze1
  • Blandford and Thorne section 6.4 (at the end of this page)
  • Write notes according to slides 22 - 27: slides

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 ):

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

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

• 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 ):

• 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 [1]

Date to hand in assignment: May 8th

Literature

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

• http://www.pmaweb.caltech.edu/Courses/ph136/yr2012/

For copyrighted material we use a password protected link to Surfdrive