1. WP4 Neutronic Technological Innovation Task 4.2 Neutron Detectors – The Intensity Frontier Francesco Piscitelli on behalf of the ESS detector group, Wigner Research Institute And Lund University Division of Nuclear Physics 2015/09/25

2. Task Length WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Sept. 15Sept. 16Sept. 17Sept. 18 Deliverable Milestone 3 years The key objective of WP4 is the technological evolution of neutron detectors in terms of resolution, intensity and dimensions.

3. Partners Involved WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier 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)

4. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The instantaneous flux will be without precedent. Description of Task 4.2: Neutron Detectors – The Intensity Frontier

5. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The instantaneous flux will be without precedent. Neutron Reflectometry Reflectometers at ESS Description of Task 4.2: Neutron Detectors – The Intensity Frontier

6. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The instantaneous flux will be without precedent. Neutron Reflectometry Description of Task 4.2: Neutron Detectors – The Intensity Frontier Reflectometers at ESS … but not only! SNS PNPI

7. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Requirements for Reflectometry at ESS Description of Task 4.2: Neutron Detectors – The Intensity Frontier

8. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Requirements for Reflectometry at ESS Description of Task 4.2: Neutron Detectors – The Intensity Frontier The state of the art

9. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Requirements for Reflectometry at ESS Description of Task 4.2: Neutron Detectors – The Intensity Frontier The state of the art x300

10. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Requirements for Reflectometry at ESS Description of Task 4.2: Neutron Detectors – The Intensity Frontier The state of the art x300 x5

11. Distribution of the work among partners WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Electric filed modeling Detailed GEANT4 on detector performance Testing and availability of beam line Data analysis Build technology prototype Initial 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

12. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier What has been done so far … concept introduced in 2005 proof of concept in 2012 University of Perugia Institut Laue-Langevin

13. neutrons 5 degrees θ 10 B 4 C layer Efficiency 45% at 2.5Å A single Boron layer inclined at 5 degrees Efficiency The intensity is spread over a wider surface (5 degrees = factor x10) WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier What has been done so far … F. Piscitelli and P. Van Esch, JINST 8 P04020 (2013)

14. Multi-Blade sample neutrons WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier What has been done so far … wires X substrate neutrons θ strips Y 10 B 4 C

15. Multi-Blade sample neutrons hit the layers at 5˚ WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier What has been done so far … 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:

16. 4 cassette demonstrator Results: Measured Efficiency 45% at 2.5Å Spatial Resolution 280μm x 4mm Counting rate capability ~5000 n/s/mm 2 at 2.5Å (limited by the electronics) Atmospheric pressure operation (thin vessel window, low scattering) (cost effective materials) What has been done so far … WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier F. Piscitelli et al., JINST 9 P03007 (2014) F. Piscitelli, PhD Thesis, Uni. Perugia & ILL (2014) arXiv:1406.3133

17. 4 cassette demonstrator Results: Measured Efficiency 45% at 2.5Å Spatial Resolution 280μm x 4mm Counting rate capability ~5000 n/s/mm 2 at 2.5Å (limited by the electronics) Atmospheric pressure operation (thin vessel window, low scattering) (cost effective materials) What has been done so far … WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier Requirements for Reflectometry at ESS

18. 9 cassette demonstrator: Counting rate capability Overlap and uniformity WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The near future … demonstrator detector as first step in BrightnESS

19. 9 cassette demonstrator: Counting rate capability Overlap and uniformity amplifier board cathode stripsanode wires holding frame 10 B 4 C substrate neutrons WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The near future … demonstrator detector as first step in BrightnESS

20. 9 cassette demonstrator: Counting rate capability - dedicated electronics with individual readout Overlap and uniformity amplifier board cathode stripsanode wires holding frame 10 B 4 C substrate neutrons WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier The near future … demonstrator detector as first step in BrightnESS

21. WP4 - Task 4.2 Neutron Detectors – The Intensity Frontier D4.2 Counting rate capability D4.6 Detector Characterization D4.12 Reflectometry detector MS12 Improvement of the Multi-Blade design MS16 Improvement of the counting rate cap. MS20 Characterization of the demonstrator MS29 1 st Detector construction Sept. 15 Sept. 16 Sept. 17Sept. 18 Planning Implementation Deliverable Milestone Milestones & Deliverables

22. Contact details Phone: +46 72 179 23 43 francesco.piscitelli@esss.se www.esss.se Francesco Piscitelli Postdoc in neutron detector technology Task leader 4.2 BrightnESS

23. Thank You!