Journal Article/Contribution to a conference proceedings/Contribution to a book

PUBDB-2024-00196

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Compton transmission polarimetry of laser-plasma accelerated electron beams

Popp, J. (Corresponding author)DESY* ; Bohlen, S.DESY* ; Helary, L.DESY* ; Stehr, F.DESY* ; List, J.DESY* ; Moortgat-Pick, G.DESY* ; Osterhoff, J.Extern*DESY* ; Põder, K.DESY*

2024
SISSA Trieste

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Please use a persistent id in citations: doi:10.22323/1.456.0093  doi:10.3204/PUBDB-2024-00196

Report No.: DESY-24-009

Abstract: Polarised particle beams are indispensable for the study of spin-dependent processes . The LEAP(Laser Electron Acceleration with Polarisation) project at DESY aims to demonstrate theacceleration of polarised electrons in the extremely high fields enabled by laser plasma acceleratorsto create high energy electron beams in ultra-compact footprint. In this proof of principleexperiment, spin-polarised electron beams with energies of tens of MeV will be generated in a sub-millimetre long plasma source. For electron beams of such energies, Compton transmissionpolarimetry is the ideal method to measure the polarisation. Gamma rays produced bybremsstrahlung are transmitted through an iron absorber core magnetised by a surroundingsolenoid, with rate and energy spectrum depending on the relativeorientation of the gamma spin and the magnetisation direction of the iron. Thetransmission asymmetry with respect to the direction of the magnetisation is proportional to theinitial electron polarisation.In this contribution, an overview of the LEAP project is presented, detailing the setup of thepolarimeter as well as its implementation and commissioning status.

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Contributing Institute(s):

1. Technol. zukünft. Teilchenph. Experim. (FTX)
2. PAs for Industrial and Health Applicatio (MPA4)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; ; ; DOAJ Seal ; SCOPUS

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