The Way Forward Mike Kordosky (W&M) Kam-Biu Luk (UC Berkeley - - PowerPoint PPT Presentation

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DUNE ND The Way Forward Mike Kordosky (W&M) Kam-Biu Luk (UC Berkeley & LBL) Steve Manly (Rochester) (Oxford & STFC/RAL) Alfons Weber 21-Sep-2017 Agenda Where we are Where to go and how to get there Suggested way

SLIDE 1

DUNE ND The Way Forward

Mike Kordosky (W&M) Kam-Biu Luk (UC Berkeley & LBL) Steve Manly (Rochester) Alfons Weber (Oxford & STFC/RAL) 21-Sep-2017

SLIDE 2

Agenda

Where we are
Where to go and how to get there
Suggested way forward
Timeline

21-Sep-2017 ND WG Meeting 2

SLIDE 3

Where we are

General agreement
LAr with Pixel readout
Maybe with side muon detectors
Followed by downstream low-density tracker
Low density tracker
In magnetic field (dipole or solenoid)
HPTPC or STT
Possible extensions
Add scintillator active target
Make the detector(s) movable

21-Sep-2017 ND WG Meeting 3

SLIDE 4

ArgonCube

21-Sep-2017 ND WG Meeting 4

SLIDE 5

HP GAr TPC

21-Sep-2017 ND WG Meeting 5

Magnet (0.5T) LAr TPChpg EM Cal (20Xo) Steel (4lo) Magnet is this model is 6.5m diameter and 7 m long Maximize acceptance for m from LAr Coil could become pressure vessel LAr: with 2 X 2 m FV ~ 7 Xo annulus

~ 1.25 lo annulus

SLIDE 6

Straw Tube Tracker

Function
Use as spectrometer for LAr
LAr provides in-situ check of STT

prediction

Two independent neutrino electron

measurements

Statements
3.5 x 3.5 m2 is absolute minimal

transverse dimension

4.5 m is minimum length

21-Sep-2017 ND WG Meeting 6

SLIDE 7

Magnets

21-Sep-2017 ND WG Meeting 7

SLIDE 8

The Magnet Question

Dipole or Solenoid
Both are possible
Advantages & disadvantages
Both: cost
Dipole better fit to square detector
Solenoid better fit to cylindrical detector
Offer:
“free” KLOE magnet may save a lot of money
Is it suitable?
Can we do the physics?

21-Sep-2017 ND WG Meeting 8

SLIDE 9

KLOE Solenoid

Study by Tom Hamernik: dune-doc-5060
Additional costs (TPC in M$)
Increase shaft diameter

4.0

Helium Liquefier system

5.6

Increased size of service building

2.6

Total

12.2

21-Sep-2017 ND WG Meeting 9

SLIDE 10

The Way forward

21-Sep-2017 ND WG Meeting 10

SLIDE 11

The Way Forward

Concentrate on a limited number of options

Evaluate physics
Express interest to built

21-Sep-2017 ND WG Meeting 11

Option 1

Dipole magnet
STT
1m 3D scintillator

Option 2

Dipole magnet
HP GAr TPC
1m 3D scintillator

Friendly amendment

Move detector ala DUNEPRISM (2 or 3 positions)

SLIDE 12

Hybrid

21-Sep-2017 ND WG Meeting 12

magnetized Muon system ECAL STT or TPC (Nuclear targets) 3D Scint

SLIDE 13

Evaluate the Physics

Need to implement geometries in general package (BNL/SB)
General physics/performance questions
have been discussed in the past
Details will be presented next week (MK talk at last CM)
Also questions for pixel LAr

21-Sep-2017 ND WG Meeting 13

SLIDE 14

Timeline

Sep 2017
define a limited set of detector options to be taken forward
task the proponents to answer a specific set of questions
Nov 2017, CERN ND workshop
Initial review of progress across the detector options, identify addition needs for

studies

Jan 2018, Collaboration meeting
midterm review of progress
Mar 2018, ND workshop
review all findings, decide on tracking technology
identify collaborators to take detector choice forward
identify R&D needs
May 2018, Collaboration meeting
Propose ND concept and team to collaboration

21-Sep-2017 ND WG Meeting 14