CERN LBNE Test Experiment

Plan view of Bat 887 2

Side section view Bat 887 3

End section view Bat 887 4

Initial Layout In the WA105 cryostat

Possible Configuration 2 APA 4 CPA 2.5m drift to limit space charge >5m active length Sample charge at different drift distances

Bat 887 layout m clearance from top of containment vessel to hook height 12.4 m 9.5 m 7.35 m Bridge crane and hook height Containment vessel and cryostat Pit A 5 m from working surface Crane bridge is offset 45° from the walls of the cryostat Roof truss work 14.2 m

Moving CPA over Cryostat and rotation 9 Assume that there are 2 lifting devices from the crane bridge and they can be operated at the same time to rotate the TPC planes. The planes would be lifted on edge horizontally over the cryostat. One lifting device would be lowered while the other is stationary to perform the rotation of the object.

Sample Timeline CERN MTP approved June 2014 Building architectural design available June 2014 Start Construction of NA Hall extension Jan 2015 Beneficial Occupancy of Experimental Hall January 2016 Outfitting of the Hall, Construction of the cryostat and cryogenics Jan2016-Jan 2017 Install Spring 2017 Run 2017 (These are physicist numbers and prone to delay!)

Detector Development Goals Cold test a full scale TPC cell. – Demonstrate reliable operation of the pre- production TPC elements Demonstrate that the calibration measurements and analysis can achieve the required accuracy. Measure calibration data to be used to model the final detector performance

Detector Development Goals Demonstrate the implementation of an external pump configuration. – Demonstrate operation – Achieve safety Buy-In (FNAL) Prepare safety support for final detector Demonstrate operation with cold Ullage and improved electronegative contamination mitigation

Detector development Goals Validate the vibration isolation strategy for use in the final detector. – Both Pump and mechanical support related

Far Detector Calibration Measure the performance of the detector with charged particles of known type and energy. Measure the shower parameters for hadronic and electromagnetic showers. This should be used to define the shower reconstruction precision. Determine how the digitization and reconstruction depends on energy deposition, drift distance, and contaminations.

NEXT STEPS

Discussion with Marzio Nessi at Neutrino 2014 Next step is the drafting of an Expression of Interest – This should be presented to the CERN SPSC (SPS and PS experiments Committee) – The next meeting is Tuesday 21 and Wednesday 22 October – For this to happen a draft should be shown at the next collaboration meeting. Draft by July 30 th

Content of the EOI Summary of the goals of the experiment – Refine the goals listed last talk – Include the energy and particle type plots from Jon – Include the figures of the TPC inside the Cryostat. Additional documents needed: – Requirements for the cryostat – ???

Plan of Action? Need to decide on a starting configuration. I will write a few page draft of the goals and a goals document. Need to solicit input from Tom and Jon on the Goals! Jack will draft a 2 page configuration document? David/Jack will draft the cryostat requirements document? Need from Tom/Jon some estimate of needed event samples?

Big open questions Do we need to rotate the detector in the cryostat? How to approach the LArIAT collaboration? – Joint effort? LBNE experiment?

MOU preparation First step is to list what we need from CERN and what we will provide to the experiment. – Propose I, David, Jack and Christos try to do this in parallel and present this at the next meeting. The template for the MOU is at: –

MOU MOU is almost all boiler plate. We need to provide text for 5 ANEXES (Appendices) ANNEXES Annex 1:List of the Sub-units (systems) and/or deliverables provided by participating institutes Annex 2:Organization and Management structure of the Collaboration and persons currently holding management positions Annex 3:List of Institutes, Funding Agencies and Representatives Annex 4:Value of deliverables, grouped by Funding Agency and/or sub-units (systems) and payment profile Annex 5:Work Schedule and Project Milestones MOU also calls for the appointment of a Team Leader – With our proposed organization this will be Christos

Comments from Marzio The EOI is much more important than the MOU. We can work with him to produce the MOU in a day. – Probably assumes we have all the inputs. CERN can at some level operate with a DRAFT MOU initially – Need to understand this a bit.