eprintid: 29319
rev_number: 12
eprint_status: archive
userid: 5675
dir: disk0/00/02/93/19
datestamp: 2021-01-26 13:53:28
lastmod: 2021-01-27 09:19:47
status_changed: 2021-01-26 13:53:28
type: doctoralThesis
metadata_visibility: show
creators_name: Bohman, Matthew
title: Sympathetic Cooling of a Proton with Resonant Image Current Coupling
subjects: 530
divisions: 130200
adv_faculty: af-13
abstract: This thesis is the realization of the long standing goal of sympathetically cooling single particles with image currents.  Particles with no electronic structure such as the bare proton or antiproton, are not amenable to standard laser cooling and ma-nipulation techniques and until now have been cooled only by coupling to cryogenictank circuits.  In measurements of the proton and antiprotong-factor however, theenergy splitting used to read out the particle’s spin state is larger than thermal en-ergy fluctuations and special techniques are required to perform the measurement.The technique developed here uses a cloud of laser cooled beryllium ions to sym-pathetically  cool  a  single  proton  by  coupling  to,  and  cooling  a  mode  of  the  tank circuit.  The use of this circuit resonantly enhances the energy exchange between the trapped particles and allows the cooling ions to be separated from the particle of  interest  over  arbitrary  distances.   This  technique,  is  the  first  demonstration  of sympathetic cooling of a proton and a macroscopic LC circuit to below 25% of the environment temperature.Sympathetically  cooled  protons  and  antiprotons  with  this  method  enable  an  improved g-factor measurement by increasing the duty cycle of the experiment.  This will  further  our  understanding  of  matter-antimatter  asymmetry  by  constraining CPT odd new physics and enhancing sensitivity to even more exotic physics.  More-over,  the  technique  presented  here  has  general  applications  in  experiments  with trapped charged particles, enabling coupling of a large number of ions, distributed in many separated trapping regions to a single cold resonator.
date: 2021
id_scheme: DOI
id_number: 10.11588/heidok.00029319
ppn_swb: 1745755527
own_urn: urn:nbn:de:bsz:16-heidok-293190
date_accepted: 2021-01-15
advisor: HASH(0x556120af5d18)
language: eng
bibsort: BOHMANMATTSYMPATHETI2021
full_text_status: public
place_of_pub: Heidelberg
citation:   Bohman, Matthew  (2021) Sympathetic Cooling of a Proton with Resonant Image Current Coupling.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/29319/1/Thesis.pdf