Status on PWO development R. W. Novotny, V. Dormenev - - PowerPoint PPT Presentation

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PANDA EMC Meeting Bochum, March 1, 2016 Status on PWO development R. W. Novotny, V. Dormenev Justus-Liebig-Universitt, II. Physikalisches Institut, Giessen, Germany SICCAS Status on CRYTUR development Timelines and financing

SLIDE 1

Status on PWO development

R. W. Novotny, V. Dormenev

Justus-Liebig-Universität, II. Physikalisches Institut, Giessen, Germany

SICCAS
Status on CRYTUR development
Timelines and financing

PANDA – EMC Meeting Bochum, March 1, 2016

SLIDE 2

SICCAS:
bviously no interest anymore
ongoing activities:
contract from Uppsala for pre-production ~ 90 crystals
parallel activities at Jlab, BNL and Orsay: NPS
JRA as part of HP-HORIZON2020

spokesperson: Carlos Munioz

Contribution by CZ-FAIR

SLIDE 3

optical longitudinal transmission

BTCP

SLIDE 4

optical longitudinal transmission
light yield @ 18oC

BTCP

SLIDE 5

radiation hardness

d 1 T T ln k

after bef

⋅         = ∆

tested using γ-rays: ~ 1.2 MeV

60Co

integral dose: 30Gy acceptance limit: ∆k < 1.1 m-1

BTCP

SLIDE 6

restart of PWO production in summer 2014
production based on Czochralski technology
use of existing pre-mixture of raw material (NeoChem, Moscow)
network: close collaboration with RINP Minsk and IPAS Prague
additional installations

already started including device for geometry controle

optimization of ovens

and N2-flushing

SLIDE 7

first full size ingots:

grown in Ar atmosphere and doped with La+Y

dimension: 20x20x200mm3

SLIDE 8

first full size ingots:

grown in Ar atmosphere and doped with La+Y

dimension: 20x20x200mm3

0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 300 400 500 600 700 800 900 dk, m-1 wavelength, nm dk 5 Gy dk 10 Gy dk 20 Gy dk 30 Gy dk 50 Gy dk 70 Gy dk 100 Gy dk 150 Gy dk 200 Gy

SLIDE 9

last sample:20x20x169 mm3

10 20 30 40 50 60 70 80 300 400 500 600 700 800 900 Transmittanse, % wavelength, nm

Longitudinal Transmittance of CRYTUR #21 (169 mm) PWO

Before irr. Irr 30 Gy BTCP 1913 ECR Explanation of LY reduction(?)

SLIDE 10

last sample:20x20x169 mm3

10 20 30 40 50 60 70 80 300 400 500 600 700 800 900 Transmittanse, % wavelength, nm

Longitudinal Transmittance of CRYTUR #21 (169 mm) PWO

Before irr. Irr 30 Gy BTCP 1913 ECR Explanation of LY reduction(?)

10 20 30 40 50 60 500 1000 1500 2000 2500 3000 3500 4000 LY, phe/MeV Time gate, ns

Light Yield vs timegate

BOTTOM on PMT, T= +18 C BOTTOM on PMT, T= -25 C Top on PMT, T= +18 C Top on PMT, T= -25 C

LY(100 ns)/L(1000 ns) ≈ 0.9 for all series LY(-25 C)/LY(+18 C)= 3.04-3.14 for "Bottom on PMT" position 3.10-3.15 for "Top on PMT" position

SLIDE 11

last sample:20x20x169 mm3

10 20 30 40 50 60 70 80 300 400 500 600 700 800 900 Transmittanse, % wavelength, nm

Longitudinal Transmittance of CRYTUR #21 (169 mm) PWO

Before irr. Irr 30 Gy BTCP 1913 ECR Explanation of LY reduction(?)

10 20 30 40 50 60 500 1000 1500 2000 2500 3000 3500 4000 LY, phe/MeV Time gate, ns

Light Yield vs timegate

BOTTOM on PMT, T= +18 C BOTTOM on PMT, T= -25 C Top on PMT, T= +18 C Top on PMT, T= -25 C

LY(100 ns)/L(1000 ns) ≈ 0.9 for all series LY(-25 C)/LY(+18 C)= 3.04-3.14 for "Bottom on PMT" position 3.10-3.15 for "Top on PMT" position

0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 300 400 500 600 700 800 900 dk, m-1 wavelength, nm

Longitudinal induced absorption coefficient of CRYTUR #21 (169 mm) PWO

dk 30 Gy

PANDA Specification Limit / dk(420 nm) ≤ 1.1 m-1

SLIDE 12

last sample:20x20x169 mm3

10 20 30 40 50 60 70 80 300 400 500 600 700 800 900 Transmittanse, % wavelength, nm

Longitudinal Transmittance of CRYTUR #21 (169 mm) PWO

Before irr. Irr 30 Gy BTCP 1913 ECR Explanation of LY reduction(?)

10 20 30 40 50 60 500 1000 1500 2000 2500 3000 3500 4000 LY, phe/MeV Time gate, ns

Light Yield vs timegate

BOTTOM on PMT, T= +18 C BOTTOM on PMT, T= -25 C Top on PMT, T= +18 C Top on PMT, T= -25 C

LY(100 ns)/L(1000 ns) ≈ 0.9 for all series LY(-25 C)/LY(+18 C)= 3.04-3.14 for "Bottom on PMT" position 3.10-3.15 for "Top on PMT" position

0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 300 400 500 600 700 800 900 dk, m-1 wavelength, nm

Longitudinal induced absorption coefficient of CRYTUR #21 (169 mm) PWO

dk 30 Gy

PANDA Specification Limit / dk(420 nm) ≤ 1.1 m-1

0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 2,0 300 400 500 600 700 800 900 dk, m-1 wavelength, nm

Transversal radiation induced coefficient of CRYTUR #21 (169 cm) PWO crystal

dk 1 cm (Bottom) dk 3 cm dk 5 cm dk 7 cm dk 9 cm dk 10 cm dk 12 cm dk 14 cm dk 16 cm (Top) Longitudinal dose= 30 Gy

Integral dose= 150 Gy

SLIDE 13

most recent samples # 58, 59, 60

rdered by Orsay:

Carlos Munioz (Jlab, NPS)

light yield reduced via

verdoping

Dimensions: 20 x 20 x 185 mm3

SLIDE 14

ptical transmission and radiation hardness: 1

SLIDE 15

ptical transmission and radiation hardness: 2