Calibration of the low-energy channel Thomson parabola of the LMJ-PETAL diagnostic SEPAGE with protons and carbon ions

J-E Ducret; D Batani; G Boutoux; A Chancé; B Gastineau; J-C Guillard; F Harrault; K Jakubowska; I Lantuejoul-Thfoin; D Leboeuf; D Loiseau; A Lotode; C Pès; N Rabhi; A Saïd; A Semsoum; L Serani; B Thomas; J-C Toussaint; B Vauzour

doi:10.1063/1.5009737

Calibration of the low-energy channel Thomson parabola of the LMJ-PETAL diagnostic SEPAGE with protons and carbon ions

Rev Sci Instrum. 2018 Feb;89(2):023304. doi: 10.1063/1.5009737.

Authors

J-E Ducret¹, D Batani¹, G Boutoux¹, A Chancé², B Gastineau², J-C Guillard², F Harrault², K Jakubowska¹, I Lantuejoul-Thfoin³, D Leboeuf², D Loiseau², A Lotode², C Pès², N Rabhi¹, A Saïd⁴, A Semsoum⁴, L Serani⁵, B Thomas⁵, J-C Toussaint², B Vauzour³

Affiliations

¹ CELIA (Centre Lasers Intenses et Applications), Université Bordeaux, CNRS, CEA, UMR 5107, F-33405 Talence, France.
² IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France.
³ CEA DAM DIF, F-91297 Arpajon, France.
⁴ Institut de Physique Nucléaire d'Orsay, 15 rue Georges Clémenceau, F-91405 Orsay cedex, France.
⁵ Centre d'Etudes Nucléaires de Bordeaux Gradignan, Université de Bordeaux, UMR 5797 CNRS/IN2P3, Gradignan 33175, France.

PMID: 29495838
DOI: 10.1063/1.5009737

Abstract

The SEPAGE diagnostic will detect charged particles (electrons, protons, and ions) accelerated in the interaction of the PETAL (PETawatt Aquitaine Laser) laser with its targets on the LMJ (Laser MegaJoule)-PETAL laser facility. SEPAGE will be equipped with a proton-radiography front detector and two Thomson parabolas (TP), corresponding to different ranges of the particle energy spectra: Above 0.1 MeV for electrons and protons in the low-energy channel, with a separation capability between protons and ¹²C⁶⁺ up to 20 MeV proton energy and above 8 MeV for the high-energy channel, with a separation capability between protons and ¹²C⁶⁺ up to 200 MeV proton kinetic energy. This paper presents the calibration of the SEPAGE's low-energy channel TP at the Tandem facility of Orsay (France) with proton beams between 3 and 22 MeV and carbon-ion beams from 5.8 to 84 MeV. The magnetic and electric fields' integrals were determined with an accuracy of 10^-3 by combining the deflections measured at different energies with different target thicknesses and materials, providing different in-target energy losses of the beam particles and hence different detected energies for given beam energies.