CERN Accelerating science

Home > Search Results: Ashkezari, M.D
Search Tips
Advanced Search
Add to Search +
Search collections:
Sort by: Display results: Output format:
CERN Document Server 25 records found  1 - 10nextend  jump to record: Search took 1.36 seconds. 
1.
Microwave Spectroscopy of Magnetically Trapped Atomic Antihydrogen / Ashkezari, M D
We have every reason to believe that equal amounts of matter and antimatter were produced in the early universe [...]
CERN-THESIS-2014-403. - 181.

Detailed record
2.
Limit on the electric charge of antihydrogen / Capra, A. (York U., Canada ; TRIUMF) ; Amole, C. (York U., Canada) ; Ashkezari, M.D. (Simon Fraser U.) ; Baquero-Ruiz, M. (UC, Berkeley) ; Bertsche, W. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Butler, E. (Imperial Coll., London ; CERN) ; Cesar, C.L. (Rio de Janeiro Federal U.) ; Charlton, M. (Swansea U.) ; Eriksson, S. (Swansea U.) ; Fajans, J. (UC, Berkeley ; LBL, Berkeley) et al.
The ALPHA collaboration has successfully demonstrated the production and the confinement of cold antihydrogen, $\overline{\mathrm{H}}$. An analysis of trapping data allowed a stringent limit to be placed on the electric charge of the simplest antiatom. [...]
arXiv:2107.08152.- 2016-12-20 - 7 p. - Published in : Hyperfine Interact. 238 (2017) 9 Fulltext: PDF;
In : 6th International Symposium on Symmetries in Subatomic Physics, Victoria, Canada, 08 - 12 Jun 2015, pp.9
Detailed record
3.
Antiproton cloud compression in the ALPHA apparatus at CERN / Gutierrez, A (British Columbia U.) ; Ashkezari, M D (Simon Fraser U.) ; Baquero-Ruiz, M (UC, Berkeley) ; Bertsche, W (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Burrows, C (Swansea U.) ; Butler, E (Imperial Coll., London ; CERN) ; Capra, A (York U., Toronto, Dept. Phys. Astron.) ; Cesar, C L (Rio de Janeiro Federal U.) ; Charlton, M (Swansea U.) ; Dunlop, R (Simon Fraser U.) et al.
We have observed a new mechanism for compression of a non-neutral plasma, where antiprotons embedded in an electron plasma are compressed by a rotating wall drive at a frequency close to the sum of the axial bounce and rotation frequencies. The radius of the antiproton cloud is reduced by up to a factor of 20 and the smallest radius measured is ∼ 0.2 mm. [...]
2015 - 8 p. - Published in : Hyperfine Interact. 235 (2015) 21-28
Detailed record
4.
The ALPHA antihydrogen trapping apparatus / ALPHA Collaboration
2014 - 22 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 735 (2014) 319-340 Elsevier Open Access article: PDF;
Detailed record
5.
Silicon vertex detector upgrade in the ALPHA experiment / Amole, C (York U., Canada) ; Andresen, G.B (Aarhus U.) ; Ashkezari, M.D (Simon Fraser U.) ; Baquero-Ruiz, M (UC, Berkeley) ; Bertsche, W (Manchester U ; Cockcroft Inst. Accel. Sci. Tech.) ; Burrows, C (Swansea U.) ; Butler, E (CERN) ; Capra, A (York U., Canada) ; Cesar, C.L (Rio de Janeiro Federal U.) ; Chapman, S (UC, Berkeley) et al.
The Silicon Vertex Detector (SVD) is the main diagnostic tool in the ALPHA-experiment. It provides precise spatial and timing information of antiproton (antihydrogen) annihilation events (vertices), and most importantly, the SVD is capable of directly identifying and analysing single annihilation events, thereby forming the basis of ALPHA ' s analysis. [...]
2013 - 3 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 732 (2013) 134-136 Elsevier Open Access article: PDF;
In : 13th Vienna Conference on Instrumentation, Vienna, Austria, 11 - 15 Feb 2013, pp.134-136
Detailed record
6.
Autoresonant-spectrometric determination of the residual gas composition in the ALPHA experiment apparatus / ALPHA Collaboration
Knowledge of the residual gas composition in the ALPHA experiment apparatus is important in our studies of antihydrogen and nonneutral plasmas. A technique based on autoresonant ion extraction from an electrostatic potential well has been developed that enables the study of the vacuum in our trap. [...]
2013 - 6 p. - Published in : Rev. Sci. Instrum. 84 (2013) 065110
Detailed record
7.
An experimental limit on the charge of antihydrogen / ALPHA Collaboration
The properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral differences (tests of CPT (charge-parity-time) invariance) or gravitational differences (tests of the weak equivalence principle). [...]
2014 - Published in : Nature Commun. 5 (2014) 3955 Macmillan Open Access article: PDF;
Detailed record
8.
In situ electromagnetic field diagnostics with an electron plasma in a Penning-Malmberg trap / Amole, C. (York U., Canada) ; Ashkezari, M.D. (Simon Fraser U.) ; Baquero-Ruiz, M. (UC, Berkeley) ; Bertsche, W. (Manchester U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Butler, E. (CERN) ; Capra, A. (York U., Canada) ; Cesar, C.L. (Rio de Janeiro Federal U.) ; Charlton, M. (Swansea U.) ; Deller, A. (Swansea U.) ; Evetts, N. (British Columbia U.) et al.
We demonstrate a novel detection method for the cyclotron resonance frequency of an electron plasma in a Penning-Malmberg trap. With this technique, the electron plasma is used as an in situ diagnostic tool for measurement of the static magnetic field and the microwave electric field in the trap. [...]
arXiv:1405.0692.- 2014-01-21 - 23 p. - Published in : New J. Phys. 16 (2014) 013037 Fulltext: njp_16_1_013037 - PDF; arXiv:1405.0692 - PDF; External link: Preprint
Detailed record
9.
Antihydrogen annihilation reconstruction with the ALPHA silicon detector / Andresen, G B (Aarhus U.) ; Ashkezari, M D (Simon Fraser U.) ; Bertsche, W (Swansea U.) ; Bowe, P D (Aarhus U.) ; Butler, E (CERN) ; Cesar, C L (Rio de Janeiro Federal U.) ; Chapman, S (UC, Berkeley) ; Charlton, M (Swansea U.) ; Deller, A (Swansea U.) ; Eriksson, S (Swansea U.) et al.
The ALPHA experiment has succeeded in trapping antihydrogen, a major milestone on the road to spectroscopic comparisons of antihydrogen with hydrogen. An annihilation vertex detector, which determines the time and position of antiproton annihilations, has been central to this achievement. [...]
2012 - Published in : Nucl. Instrum. Methods Phys. Res., A 684 (2012) 73-81
Detailed record
10.
Description and first application of a new technique to measure the gravitational mass of antihydrogen / The ALPHA Collaboration
Physicists have long wondered whether the gravitational interactions between matter and antimatter might be different from those between matter and itself. Although there are many indirect indications that no such differences exist and that the weak equivalence principle holds, there have been no direct, free-fall style, experimental tests of gravity on antimatter. [...]
2013 - Published in : Nature Commun. 4 (2013) 1785 Macmillan Open Access article: PDF;
Detailed record

CERN Document Server : 25 records found   1 - 10nextend  jump to record:
See also: similar author names
14 Ashkezari, M D
6 Ashkezari, M.D.
1 Ashkezari, Mohammad D
2 Ashkezari, Mohammad D.
Interested in being notified about new results for this query?
Set up a personal email alert or subscribe to the RSS feed.
Haven't found what you were looking for? Try your search on other servers:
Ashkezari, M.D in Amazon
Ashkezari, M.D in CERN EDMS
Ashkezari, M.D in CERN Intranet
Ashkezari, M.D in CiteSeer
Ashkezari, M.D in Google Books
Ashkezari, M.D in Google Scholar
Ashkezari, M.D in Google Web
Ashkezari, M.D in IEC		Ashkezari, M.D in IHS
Ashkezari, M.D in INSPIRE
Ashkezari, M.D in ISO
Ashkezari, M.D in KISS Books/Journals
Ashkezari, M.D in KISS Preprints
Ashkezari, M.D in NEBIS
Ashkezari, M.D in SLAC Library Catalog
Ashkezari, M.D in Scirus