Final Report Transfigured Electron Double Slit Experiment TEDSE

Final Report: Transfigured Electron Double Slit Experiment (TEDSE) Phila Rembold Supervisor: Roger Dixon University of St Andrews (UK) Helen Edwards Internship – Final Report 8/24/2017

Structure 1. Background 2. Experiment Setup 3. Energy Loss |Ѱ|2 1. Collisional 2. Radiative 4. Wave Function 1. Splitting 5. Summary 2 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report Ileft Iright x 0 xseptum

1. Background - Fractional Force collector • grid ion source BUT: Fast Ions!! 3 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report Credit: Elser et al. , Journ of Low Temp Phys, V 123, p 7 (2001)

1. Background - Fractional Force electron e electrinos How does an electric field influence each part? partial vs full wave function 4 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report Credit: Elser et al. , Journ of Low Temp Phys, V 123, p 7 (2001)

2. Experiment Setup collimators target electron beam E septum 5 8/24/17 position detector Phila Rembold | Helen Edwards Internship - Final Report extended septum collimator

3. 1 Energy Loss - Collisional Scattering off atomic electrons in the target: • Ionization • Excitation → Heat → Dispersion of beam → Broader wave function 6 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report Credit: T Mehdi (2015) ARXIV: 1501. 00836

3. 1 Energy Loss - Collisional energy loss enabled energy loss disabled 7 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

3. 1 Energy Loss - Radiative Bremsstrahlung Problems: Photons Pair Produce → False Signals Damage Detector Electrons Get Strongly Bent Solution: Magnet →Bend Electrons Away Catch Bent Electrons 8 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report Credit: https: //de. wikipedia. org/wiki/Bremsstrahlung

3. 2 Energy Loss - Radiative 9 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

3. 2 Energy Loss - Radiative By bending the electron beam, we effectively move the photon beam away from the important detector parts. 10 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

3. 2 Energy Loss - Radiative 11 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

3. 2 Energy Loss - Radiative 0. 17 m. T Byproduct: Momentum Selection 12 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

4. 1 Wave Function - Splitting 13 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

4. 1 Wave Function - Splitting |Ѱ|2 Ileft Iright x 0 14 8/24/17 xseptum Phila Rembold | Helen Edwards Internship - Final Report

4. 1 Wave Function - Splitting full electron uniformly split wave function gaussian split wave function 15 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

5. Summary • Better understanding of backgrounds – Collisional → produces signal tail – Radiative → magnetic field to avoid brems-photons • Wave functions need to be understood better – Possibly numerical simulations of TDSE to see effect of EM fields on wave function • Optimize detector further Thank you for the support to: Roger Dixon - Supervisor Richard Tesarek Co – Supervisor Patrick Fox theoretical advice Alexander Valishev IOTA specifications 16 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

*Back Up (Experiment Setup) target electron beam collimators E septum 17 8/24/17 position detector Phila Rembold | Helen Edwards Internship - Final Report extended septum collimator

*Back Up (Energy Loss – Collisional) fwhm Bethe 18 8/24/17 Møller Phila Rembold | Helen Edwards Internship - Final Report

*Back Up (Energy Loss – Collisional) 19 8/24/17 Phila Rembold | Helen Edwards Internship - Final Report

*Back Up (Wave Function – Force Calculations) Partial Force Differential Force Iright Ileft 20 8/24/17 Ileft Iright Phila Rembold | Helen Edwards Internship - Final Report Iright