Advanced Physics Labs• Step II: Read the manual (and ask/look for additional material when...

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Mauro Donegà - Severian Gvasaliya ETHZ 1

Advanced Physics Labs:Physikpraktikum 3, Physikpraktikum 4

HS 2019

Solid state Physics Quantum Optics

Astrophysics Particle Physics

• hands-on experience with complex experiments• data analysis• data interpretation• scientific report writing

Learning goals of the advanced Physics labs

Exchange students

Exchange students will be able to sign up for the Praktikum 3 in Spring semester (FS2019)

The enrolment for these special cases are treated directly by the Study Administration:

email : studiensekretariat@phys.ethz.ch

Starting point for all information

https://vp.phys.ethz.ch/

What experiments are available

total ~60 experiments~140 workplaces

Topics: General PhysicsOpticsSolid State PhysicsNuclear and Particle PhysicsAstrophysics

Physikpraktikum 3

Physikpraktikum 4 (ASL)

Solid-State Physics Particle Physics

Astronomy Quantum Optics

• Step I: Sign up for an experiment: come in person to HPP J14 onMonday 10h30 - 11h30Wednesday 15h00 - 16h00

• Step II:Read the manual (and ask/look for additional material when unclear), get familiar with the needed safety regulations and (only after that!) get in touch with the assistant

All assistants are present every Monday - personal appointments possible on other days

• Step III: Perform the experimentPlan about 2-3 weeksDuring this period you “own” the experiment Mon - Fri (8h00 - 18h00)

(excluding Thursdays - needed for experiments maintenance) Labs are closed during semester breaks and ETH holidays

• Step IV: ”Release” the experiment (HPP J14)- Get the (physical or electronic) signature "measurement finished" from your assistant, confirming you

are done with the data taking

• Step V: Write report- hand in report to assistant: maximum 3 weeks after the end of the experiment- implement all corrections required by assistant- (physical or electronic) signature "report handed in" from assistant

• Step VI: Hand in report to VP-heads IN PERSON and within the deadline !

How does it work ? 6 steps

Several experiments are to be completed by single students, when working in larger teams:

• Everybody should contribute to the measurement

• Each student performs her/his own independent data analysis

• Each student writes her/his own independent report

ALL reports have to be handed in (to the assistant) before the end of the semester

• Incomplete experiments “expire” at the end of the semester

Important remarks

Physical Logbook• You are required to keep a physical logbook (not electronic)

for all the experiments you perform

• Each experiment starts with a logbook entry of its title and starting date

• Use the logbook to take notes about the experiment, experimental procedures, measurements, results, etc…

• Ask the assistant's signatures "measurement finished" and "report handed in" in the logbook. If for any reason the assistant cannot be physically present to sign the logbook, he will in any case update the status of your experiment in an internal VP-database and let you know. This is OK too !

Getting ECTS credit points (7 pts)

Each experiment counts as 1 “Praktikum-point”

ASL AstroweekASL IQE Atom Photon InteractionASL LFKP Cleanroom

You need to collect 4 “Praktikum -points” within 1 year, meaning:

a) Report accepted and signed by assistant AND

b) Report shown IN PERSON and accepted by VP-heads

Exceptionally an extra “Praktikum -point” can be assigned for additional work done and agreed beforehand with VP-heads (e.g. improve documentation, improve the experiment, implement a new idea about the experiment)

count as 2 “Praktikum -points”

In case of troubles:• Try to solve experimental issues first by yourself

- If something is broken: contact the assistant- For severe damages the lab technicians will help

• ANY ACCIDENT (even the smallest) has to be immediately reported to the VP-heads.

• Communicate with teaching assistants/VP heads. Belated issues always require more efforts to be solved

Your SAFETY is our primary concern !And it must be your primary concern too.

You are the first responsible for your own safety !During experiments you may be required to operate:- lasers- radioactive sources- pressurized gases- cryogenic liquids- etc..

A safety introduction will follow later this morning.You are required to participate and obtain a participation certificate the end of it.Without a signed certificate you will not be allowed to perform the experiments !Remember to collect your certificates at the end of the safety introduction.

Experiments involving lasers and cryogenic liquids MUST BE performed by Two Persons (Two-Body Rule of safe work).

For safety reasons, in case of pregnancy / breast feeding, the access to some of the experiments is restricted. Please contact: mutterschutz_cabs@ethz.ch

1. Step: for log-in use your NETHZ-username and password

Practicalities: access to your personal pagehttps://vp.phys.ethz.ch/

1. Step: enter your last name and ETH student ID number:

Practicalities: access to your personal page

Scientific conduct / Plagiarism

ETH Zurich–Guidelines for Research Integrityhttps://rechtssammlung.sp.ethz.ch/Dokumente/414en.pdf

At the ETH Zurich research is founded on intellectual honesty. Researchers at the ETH Zurich are committed to scientific integrity and truthfulness in research and peer review.

In our labs, when any sign of plagiarism or scientific mis-conduct is spotted (e.g. use data taken in previous years / by different persons, copied analyses/ reports, etc…)

the student might be asked to reanalyse the data and/or rewrite the report and/or repeat the entire experiment

A course is provided on Scientific Works in Physics 402-2000-00L.

https://vp.phys.ethz.ch/index.php?page=berichte

As already said in a previous slide:Several experiments are to be completed by single students, when working in larger teams:• Everybody should contribute to the measurement• Each student performs her/his own independent data analysis• Each student writes her/his own independent report

Data analysis toolbox• Required for all students • time and place:

Lectures: Mo 16-17 (15.45-16.30), HPV G5Exercises: Mo 17-18 (16.45-17.30), HIT F11.1,HIT J51, HIT J53, HIT K51, HIT K52

• first lecture: Sept 30th, 2019This is not a full fledged statistics course (if interested there are several good courses at ETH). The goal is to provide you with the tools you will need to properly extract information from the data you take.Main topics:

- data representation: plots, histograms- characterize datasets: mean, variance, etc…- statistical and systematic uncertainties- error estimation and propagation- probability density function - covariance and correlation matrices- parameters estimators and their properties (fits):

- Least Squares (X2 ) fit - Likelihood fit

- Goodness of fit (X2)- How to generate simple Monte Carlo samples

We will use jupyter notebooks (python):this afternoon after the first lecture the assistants will help youtroubleshooting the installation(see mail “Python for Statistics classes”

sent on 16.09.2019)

Two courses Mondays and Tuesdays offered to P3 P4 studentsNumber of slots limited to 4 participants per course (minimum 4). Application to be done online, checkhttp://vp.phys.ethz.ch/index.php?page=werk/

“Werkstattkurse” “Workshop course”

https://doodle.com/poll/xtrwgcetwft6izdk first come, first served

Student project house https://sph.ethz.ch/

Dr. Severian GvasaliyaLaboratorium für FestkörperphysikHPP J14 / HPF F 21Tel 3 94 35sgvasali@phys.ethz.ch

VP-Leitung: +41 44 63 36556, HPP J 14

Dr. Mauro DonegaInstitut für Teilchen- & AstrophysikHPP J 14/ HPK E 30Tel 3 92 58mdonega@phys.ethz.ch

Oliver SchwagerVorlesungsexperimente/Physikprakt. HPP J148093 ZürichTel + 41 44 633 27 31

schwager@phys.ethz.ch

Thomas KaempferVorlesungsexperimente/Physikprakt. HPP J148093 ZürichTel +41 44 633 27 32

thomas.kaempfer@phys.ethz.ch

Other phone numbers:VP-head: +41 44 633 6556, HPP J 14Assistant room / Stud. Library: HPP H21

Andreas Eggenberger

HPP J14Hönggerbergring 648093 ZürichTel +41 44 633 27 71

egandrea@phys.ethz.ch

Advanced Physics Labs• Step II: Read the manual (and ask/look for additional material when...

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