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 link

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