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ANSEL. Advanced Nuclear Science Education Laboratory. Profs. Frank L.H. Wolfs and W. Udo Schröder Created with Funds from the Nuclear Regulatory Commission. Today’s Agenda. Introduction to ANSEL (Reference texts, grades, reports, tools & resources, experiments, schedule) Q&A

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Profs frank l h wolfs and w udo schr der created with funds from the nuclear regulatory commission

ANSEL

Advanced Nuclear Science

Education Laboratory

Profs. Frank L.H. Wolfs and W. Udo Schröder

Created with Funds from the Nuclear Regulatory Commission


Today s agenda

Today’s Agenda

Introduction to ANSEL (Reference texts, grades, reports, tools & resources, experiments, schedule)

Q&A

Visit the advanced lab in Physics (B&L 171/172).

(Visit the nuclear chemistry lab in Chemistry (Hutchison Hall 441,442))

W. Udo Schröder ANSEL 2012


Ansel

ANSEL

Purpose of ANSEL: provide undergraduate/graduate students with hands-on experience in nuclear/radiation science and technology. Communicate research in professional fashion.

ANSEL Schedule

One weekly lecture (M 11:00 – 11:50 a.m., Hylan 105)

  • to introduce & discuss scientific & technological background of experiments,

  • to relate principles of radiation detection and measurement to modern applications in physics, chemistry, environmental studies, power technology, medicine and forensics.

    Two weekly lab periods (T&R 2:00 – 4:40 p.m.) ++

  • to conduct various experiments,

  • extra time for long data taking runs (consult with TA).

W. Udo Schröder ANSEL 2012


Text reference books

Text/Reference Books

  • Main text book:

    “Radiation Detection and Measurement”

    by Glenn K. Knoll.

  • Reference for data and error analysis:

    “Data Reduction and Error Analysis”

    by Philip R. Bevington and D. Keith Robinson

  • Various ancillary tables, graphs

    >>>>Lab log books, canbe obtained in UR book store

W. Udo Schröder ANSEL 2012


Course grade components

Course Grade Components

  • Written lab reports for each of the main experiments to be conducted in this course.

    Contents & Form:

    • Reports are based on team experiments, as documented by each experimenter in a separate, dedicated log book.

    • Experiment data analysis must be performed, and the lab report produced, independently by each experimenter.

    • Analysis of statistical and systematic uncertainties is an important component of each lab report.

    • Lab reports should be submitted in “publication ready” form. An appropriate report style is defined in the AIP Style Manual (Twiki). An MS Word template will also be provided.

  • Oral presentation about one of the experiments at the end of the semester.

W. Udo Schröder ANSEL 2012


Pages from sample report

Pages From Sample Report

W. Udo Schröder ANSEL 2012


Course grade components1

Course Grade Components

  • Written lab reports for each of the main experiments to be conducted in this course.

    Contents & Form:

    • Reports are based on team experiments, as documented by each experimenter in a separate, dedicated log book.

    • Experiment data analysis must be performed and the lab report produced independently by each experimenter.

    • Analysis of statistical and systematic uncertainties is an important component of each lab report.

    • Lab reports should be submitted in “publication ready” form.An appropriate report style is defined in the AIP Style Manual (Twiki). An MS Word template will also be provided.

  • Oral presentation about one of the experiments at semester end (May 1, B&L 407, 2:00 p.m.).

W. Udo Schröder ANSEL 2012


Tools resources

Tools & Resources

  • The ANSEL Twiki*:

    • Download course materials.

    • Upload personal documents, data, analysis setups, etc.

      >>>> Quick review of the ANSEL TWiki.

  • Computer assisted data storage and analysis:

    • Data collected during the experiments can be stored in event-by-event data files for off-line analysis.

    • All experiments provide data files in ASCII format, which can be processed with a variety of tools.

    • Samples of analysis using Igor will be provided. Igor is available at no cost for use in this course and runs on Windows and Mac OS. It is available on the ANSEL TWiki.

  • Room access:

    • Key to lab rooms is obtained from the main office (B&L 206). Recoverable $20 deposit.

      *Maintained by F. L. H. Wolfs

W. Udo Schröder ANSEL 2012


Use of ansel twiki

Use of ANSEL TWiki

W. Udo Schröder ANSEL 2012


Use of ansel twiki1

Use of ANSEL TWiki

W. Udo Schröder ANSEL 2012


Use of ansel twiki2

Use of ANSEL TWiki

W. Udo Schröder ANSEL 2012


Use of ansel twiki3

Use of ANSEL TWiki

W. Udo Schröder ANSEL 2012


Tools resources1

Tools & Resources

  • The ANSEL Twiki*:

    • Download course materials.

    • Upload personal documents, data, analysis setups, etc.

      >>>> Quick review of the ANSEL TWiki.

  • Computer assisted data storage and analysis:

    • Data collected during the experiments can be stored in event-by-event data files for off-line analysis.

    • All experiments provide data files in ASCII format, which can be processed with a variety of tools.

    • Samples of analysis using Igor will be provided. Igor is available at no cost for use in this course and runs on Windows and Mac OS. It is available on the ANSEL TWiki.

  • Room access:

    • Key to lab rooms is obtained from the main office (B&L 206). Recoverable $20 deposit.

      *Maintained by F. L. H. Wolfs >>>>>>> Experiments

W. Udo Schröder ANSEL 2012


Ansel experiment 0

ANSEL Experiment 0

Electronic signal processing:

  • Modular electronics provide maximum flexibility.

  • Complex tasks reduced to elementary problems.

  • Recurring individual tasks

Digital Oscilloscope

NIM Bin with Electronic Modules

Schematic Block Diagram of m Counting Electronics

W. Udo Schröder ANSEL 2012


Ansel experiments 1 2

ANSEL Experiments 1/2

Gamma-ray spectroscopy:

  • Study of g-ray emission with various detectors (NaI(Tl) and HPGe).

  • Signal processing.

  • Detector calibration.

  • Identification of unknown materials (forensics).

W. Udo Schröder ANSEL 2012


Ansel experiments 2 3

ANSEL Experiments 2/3

Charged-particle spectroscopy:

  • Calibration and optimization of signal processing for solid-state and gas detectors.

  • Linearity measurements using a pulse generator.

  • Use a transmission or Rutherford backscattering to determine composition of thin films.

W. Udo Schröder ANSEL 2012


Ansel experiment 4

ANSEL Experiment 4

g-g coincidence and tracing experiments:

  • How to identify and select coincident g emission.

  • How spectra change under coincidence requirements (event selection).

  • Use back-to-back gamma rays to trace emitter (PET scan), determine location of unknown sources.

W. Udo Schröder ANSEL 2012


Ansel experiment 5

ANSEL Experiment 5

Muon spectroscopy and life time:

  • Measure stopping power (radiological effect) of cosmic ray muons, measure their finite lifetime via decay/capture products.

  • Complex experiment requires digital coincidence logics (to identify muons) and anti-coincidence techniques (to identify stopped muons).

  • Direct detection of the muon-decay products.

W. Udo Schröder ANSEL 2012


Ansel experiment 6

ANSEL Experiment 6

Mössbauer

spectroscopy:

  • Ultra-sensitive spectroscopy of nuclear energy levels by Doppler-shifting energy of g-rays using a moving g source.

  • Technique allows one to study the influence of macroscopic electric and magnetic environment on nuclear energy levels.

W. Udo Schröder ANSEL 2012


Ansel experiment 7

ANSEL Experiment 7

Neutron activation and nuclear life times:

  • Destruction-free material testing.

  • How to isotopically identify activated species (forensics).

  • How to quantify sample contents.

W. Udo Schröder ANSEL 2012


Course schedule 1

Course Schedule (1)

  • Week of 1/22:

    • 1/23: Lecture, Introduction to analog and digital electronics

    • 1/24: Demonstrations (in B&L 407), Intro to data acquisition (DDC8) and analysis (Igor).

    • 1/26: Radiation safety training, required for this course. Medical Center (Room 1-9525) during the regular ANSEL meeting time (2 -4:40 p.m.). Exam at the end of class period needs to be passed in order to be able to continue with the course.

  • Week of 1/29:

    • 1/30: Lecture, Gamma spectroscopy.

    • 1/31&2/2: Lab: Analog and digital electronics

      END OF EXPERIMENT 0  Prepare brief summary Report 0

W. Udo Schröder ANSEL 2012


Course schedule 2

Course Schedule (2)

  • Week of 2/5:

    • 2/6: Lecture, Interaction of g-rays with matter.

    • 2/7& 2/9 Lab, Detection of g-rays with NaI detectors of different sizes.

      END OF EXPERIMENT 1  Prepare Report 1 “Gamma spectroscopy with NaI(Tl) detectors”

  • Weeks of 2/12& 2/19:

    • 2/13&2/20: Lectures, Ionizing radiation and detectors

    • 2/14,16,21,23 Labs, High resolution spectroscopy with solid-state detectors (HPGe/Si), g-ray and alpha spectroscopy.

      END OF EXPERIMENT 2  Prepare Report 2 “High-resolution spectroscopy with solid-state detectors”

W. Udo Schröder ANSEL 2012


Course schedule 3

Course Schedule (3)

  • Week of 2/26:

  • 2/27: Lecture, Gas proportional and ionization counters

  • 2/28 & 3/1 Labs, Geiger counters and ionization chamber.

    END OF EXPERIMENT 3  Prepare Report 3 “Gas ionization detectors”

  • Week of 3/4: Start of 4 experiments, 1.5 weeks/experiment.

    • 3/5: Lecture, g-g angular correlations

    • 3/6 & 3/8 Angular correlations and ray tracing (NaI – NaI) or (NaI – Ge).

      >>>>> Week of 3/11-3/17 Spring Break >>>>>>

    • Week of 3/18:

    • 3/19: Lecture, Mössbauer effect and spectroscopy

    • 3/20 & 3/22 Angular correlations and ray tracing (NaI – NaI) or (NaI – Ge).

      END OF EXPERIMENT 4  Prepare Report 4“Gamma-gamma and imaging”

  • W. Udo Schröder ANSEL 2012


    Course schedule 31

    Course Schedule (3)

    • Weeks of 3/25 & 4/1 -4/8:

      • 3/26 & 4/2: Lectures, Life time and neutron activation measurements

      • 3/27 & 3/29 & 4/3 Cosmic ray muons (Group 1) /Mössbauer spectroscopy (Group 2)

      • 4/5 & 4/10 & 4/12 Cosmic ray muons (Group 2) /Mössbauer spectroscopy (Group 1)

        END OF EXPERIMENT 5 (6)  Prepare Reports 5(6)

    • Weeks of 4/15 & 4/22:

      • 4/17 & 4/22: Experiment, Neutron activation

        END OF EXPERIMENT 7  Prepare Report 7 “Life time and n activation measurements”

        May 1, 2:00 - 4:30, B&L 407 Experiment presentations

    W. Udo Schröder ANSEL 2012


    Profs frank l h wolfs and w udo schr der

    ANSEL

    End Intro


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