Difference between revisions of "Particle Detection B"
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=== Lecture 4: Low frequency noise: seismic and Newtonian noise, suspension systems === | === Lecture 4: Low frequency noise: seismic and Newtonian noise, suspension systems === | ||
| − | The chapter ‘Seismic Noise’ should contain (group ): | + | The chapter ‘Seismic Noise’ should contain (group 3): |
* definition of Seismic noise | * definition of Seismic noise | ||
* technique for the reduction of seismic noise (free-falling IFO, damped harmonic oscillator, vibration isolation) | * technique for the reduction of seismic noise (free-falling IFO, damped harmonic oscillator, vibration isolation) | ||
| − | The chapter ‘Suspension system of Virgo’ should contain (group ): | + | The chapter ‘Suspension system of Virgo’ should contain (group 2): |
* description of the Virgo suspension system (Superattenuator, inverted pendulum, MultiSAS) | * 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 [https://surfdrive.surf.nl/files/index.php/s/NX456Jj0sF8W42x link] | All the material can be found in the SURFdrive folder at this [https://surfdrive.surf.nl/files/index.php/s/NX456Jj0sF8W42x link] | ||
Revision as of 07:52, 22 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):
- 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
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