Kaonic-atom x-ray spectroscopy with cryogenic detectors Shinji - PowerPoint PPT Presentation

2 Aug., 2016 Meson in Nucleus 2016 (MIN16) @ YITP , Kyoto Kaonic-atom x-ray spectroscopy with cryogenic detectors Shinji OKADA (RIKEN) for HEATES & J-PARC E62 (E57) collaborations

Kaonic atom experiments High-intensity Novel X-ray Stopped Kaons Detectors TES SDD J-PARC Cryogenic Silicon drift K1.8BR beamline detector detector for future 1 package : “new K1.1BR beamline” 4 x 2 array (~ 5cm 2 ) @ Extended hadron facility Large area • (> 200 cm 2 ) • ° High resolution INFN-LNF (Italy) High High DA Φ NE precision sensitivity e+ e- collider

Kaonic atom experiments High-intensity Novel X-ray Stopped Kaons Detectors TES SDD J-PARC Cryogenic Silicon drift K1.8BR beamline detector detector for future 1 package : “new K1.1BR beamline” 4 x 2 array (~ 5cm 2 ) @ Extended hadron facility Large area • (> 200 cm 2 ) • ° High resolution INFN-LNF (Italy) High High DA Φ NE precision sensitivity e+ e- collider

3 Brief history towards K-atom w/TES 2012 Collaborate with astro-physics guys developing TES Last workshop @ YITP 2013 get started the collaboration “Hadron in Nuclei” in 2013 progress 2014 Demonstration study @ PSI — π atom w/TES 2015 Approved by J-PARC PAC (Program Advisory Committee) 2016 Commissioning run @ J-PARC … NOW ! 2017 J-PARC E62 physics run in 2017 !!

4 Contents 1. Introduction 2. X-ray detector : TES 3. Demonstration with π beam 4. J-PARC E62 experimental plan 5. Commissioning run @ J-PARC 6. Summay

1. Introduction

6 Study of K-nucl. interaction Two experimental approaches — via K-nucleus bound system — Coulomb K - K - - Nucl. potential Precision x-ray measurement Atomic state complementary Reaction formation Nuclear state (search for deeply bound K- cluster) V 0 +iW 0

7 Kaonic atom x-ray spectroscopy X-ray n+1 detector Width Γ n Shift Δ E (Coulomb only) Strong Nuclear interaction absorption