wp4 neutronic technological innovation task 4.2 neutron detectors – the intensity frontier...

WP4 Neutronic Technological Innovation

Task 4.2 Neutron Detectors – The Intensity Frontier

Francesco Piscitelli

on behalf of the ESS detector group,Wigner Research Institute

AndLund University Division of Nuclear Physics

2015/09/25

Task Length

WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier

Sept. 15 Sept. 16 Sept. 17 Sept. 18

Deliverable

Milestone

3 years

The key objective of WP4 is the technological evolution of neutron detectors in terms of resolution, intensity and dimensions.

Partners Involved


Wigner Research Institute(Dezsõ Varga and Eszter Dian)

LU has a long story of developing novel particle detectors for hostile particle accelerator.LU has completed the construction of the Source-Testing Facility for prototype commissioning.Their experience with developing and testing detectors will be crucial for the task in WP4.

BNC-Wigner is the largest organization in Hungary comprising 45 research group of various profile.BNC-Wigner has a long tradition in working with industrial companies; in 10y over 25 companies of various size and profile were involved in technology transfer related to neutron developments.BNC-Wigner will support with the detector development required in the intensity frontier task in WP4.

ESS Detector Group(Francesco Piscitelli)

Division of Nuclear Physics(Kevin Fissum)


The instantaneous flux will be without precedent.

Description of Task 4.2: Neutron Detectors – The Intensity Frontier



Neutron Reflectometry

Reflectometers at ESS




Neutron Reflectometry


Reflectometers at ESS … but not only!

SNS

PNPI


Requirements for Reflectometry at ESS





The state of the art




The state of the artx300




The state of the artx300x5

Distribution of the work among partners


Electric filed modelingDetailed GEANT4 on detector performanceTesting and availability of beam lineData analysis

Build technology prototypeInitial test at both beam line and Reflectometry beam line

Under discussion …

All three partners will work together on the final detector for the ESS Reflectometers


What has been done so far …

concept introduced in 2005

proof of concept in 2012

University of Perugia

Institut Laue-Langevin

Institut Laue-Langevin

neutrons

5 degrees

θ

10B4C layer

Efficiency 45% at 2.5ÅA single Boron layer inclined at 5 degrees

Efficiency

The intensity is spread over a wider surface(5 degrees = factor x10)


What has been done so far … F. Piscitelli and P. Van Esch, JINST 8 P04020 (2013)

Multi-Bladesample

neutrons



wires X

substrate

neutrons

θstrip

s Y10B4C

Multi-Bladesample

neutrons

neutrons hit the layers at 5˚



concept introduced in 2005

proof of concept in 2012

F. Piscitelli et al., JINST 9 P03007 (2014)F. Piscitelli, PhD Thesis, Uni. Perugia & ILL (2014) arXiv:1406.3133

J.C. Buffet et al., Nucl. Instrum. Meth. A 554 392 (2005)4 cassette demonstrator:

4 cassette demonstratorResults:

• Measured Efficiency 45% at 2.5Å

• Spatial Resolution 280μm x 4mm

• Counting rate capability ~5000 n/s/mm2 at 2.5Å (limited by the electronics)

• Atmospheric pressure operation (thin vessel window, low scattering) (cost effective materials)



F. Piscitelli et al., JINST 9 P03007 (2014)F. Piscitelli, PhD Thesis, Uni. Perugia & ILL (2014) arXiv:1406.3133

4 cassette demonstratorResults:

• Measured Efficiency 45% at 2.5Å

• Spatial Resolution 280μm x 4mm

• Counting rate capability ~5000 n/s/mm2 at 2.5Å (limited by the electronics)

• Atmospheric pressure operation (thin vessel window, low scattering) (cost effective materials)




9 cassette demonstrator:

• Counting rate capability

• Overlap and uniformity


The near future … demonstrator detector as first step in BrightnESS


• Counting rate capability


amplifier

board

am

plifi

er

board

cath

ode

stri

ps

anode w

ires

hold

ing

fram

e

10B4 C substrate

neutro

ns




• Counting rate capability - dedicated electronics with individual readout


amplifier

board

am

plifi

er

board

cath

ode

stri

ps

anode w

ires

hold

ing

fram

e

10B4 C substrate

neutro

ns




D4.2 Counting rate capabilityD4.6 Detector Characterization D4.12 Reflectometry detector

MS12 Improvement of the Multi-Blade designMS16 Improvement of the counting rate cap.MS20 Characterization of the demonstratorMS29 1st Detector construction

Sept. 15 Sept. 16 Sept. 17 Sept. 18

Planning

Implementation

Deliverable

Milestone

Milestones & Deliverables

Contact details

Phone: +46 72 179 23 [email protected]

Francesco PiscitelliPostdoc in neutron detector technologyTask leader 4.2 BrightnESS

mailto:[email protected]

http://www.esss.se/

Thank You!

wp4 neutronic technological innovation task 4.2 neutron detectors – the intensity frontier...

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