# Presentation: 551115

## Fermilab Proton DriverPhysics Study

- Steve Geer                                          General PD Meeting                  Jan 12th  2005

- Introduction
- Organization / Working Groups
- Workshop Conclusions
- Advisory Committee & Reviews
- Future
- Getting Involved

## Introduction

- Following the recommendations of the Fermilab Long Range Planning Committee, the Fermilab Director has requested:
- “Preparation of documentation sufficient to establish mission need for the Proton Driver as defined by the Department of Energy CD-0 process.”
- “_Development and documentation of the physics case_. I would like this to include both support for a forefront neutrino program at Fermilab in the decade 2010 and beyond, and identification of other opportunities that could potentially be enabled with a Proton driver facility.”

## Proton Driver Physics StudyWorking Groups and Conveners

- WG1:  Neutrino Oscillations
- 	D. Harris (FNAL), S. Brice (FNAL), W. Winter (Princeton)
- WG2:  Neutrino Interactions
- 	J. Morfin (FNAL), R. Ransome (Rutgers), R. Tayloe (Indiana)
- WG3:  Muons
- 	R. Ray (FNAL), R. Roberts (BU)
- WG4:  Kaons and Pions
- 	H. Nguyen (FNAL), T. Yamanaka (Osaka U.)
- WG5:  Antiprotons
- 	D. Christian (FNAL), M. Mandelkern (UCI)
- WG6:  Tevatron Collider
- 	H. Cheung (FNAL), Penny Kasper (FNAL), P. Ratoff (Lancaster U.)
- WG7  Neutrons
- 	T. Bowles (LANL), G. Greene (ORNL)

## October Workshop

- Fermilab Proton Driver Physics Workshop, 6-9th October, 2004
- 133 participants
- Lots of good talks & enthusiasm for a Proton Driver physics program
- _Talks and workshop details:_
- http://www-td.fnal.gov/projects/PD/Physics.html

## October Workshop

## Picture Emerging from October Workshop

- Neutrino Oscillation physics is driving the interest in a Proton Driver. The physics case seems very strong.
- The neutrino oscillation program needs continued progress in neutrino scattering measurements  needs to be one or more neutrino scattering experiments. Neutrino scattering is interesting in its own right & will broaden the program
- Low energy muon physics could provide an exciting additional physics program ... but a muon source needs to be designed.
- Precision kaon and pion measurements may also provide interesting additionalexperiments, although using the intensity will be a challenge.
- Other possibilities: Some specialized neutron physics experiments, antiprotons (?),medical physics (?), ....

## A Long-Baseline Fermilab Proton Driver Programwould make Critical Contributions to the Global Program

## Proton Driver Scientific Advisory Committee

- Peter Meyers  (Chair)       	Princeton
- Ed Blucher		Chicago
- Gerhard Buchalla		Munich
- John Dainton		UK
- Yves Declais		CERNLance Dixon		SLAC
- Umberto Dosselli		INFN
- Don Geesaman		ANL
- Geoff Greene		ORNL
- Taka Kondo		KEK
- Marvin Marshak		Minnesota
- Bill Molzon		UCI
- Hitoshi Murayama	UC Berkley
- James Siegrist		LBNL
- Anthony Thomas		JLab
- Taku  Yamanaka		Osaka

- Give the emerging physics case a critical review
- Help us to reach out to a broad community as we develop a constituency excited by the Proton Driver Physics Program

## First Review of the Emerging Physics Case

- The Working Groups prepared draft working group reports that given to the Proton Driver Scientific Advisory Committee. These reports were then presented to the committee in a review on Dec. 16th

## Comments from the First Review

- Main case rests on neutrino oscillations
- There is a generic case to be made for the non-neutrino program- low energy flavor physics is complementary to LHC program
- Muon and kaon physics programs need further elaboration to showmore explicitly how the high fluxes will be used.
- The neutrino oscillation physics case for a Proton Driver in each imagined future scenario is beginning to look convincing, but there is a need to develop experiment timelines ... what do we know at each branch in the roadmap, etc.
- Need to complete the ongoing 8 GeV beam to NOvA study and getit into the next draft (the existing use of the 8 GeV beam for long-baseline experiments looks “pricey”).
- Need discussion of proton economics, which pieces of the programcan run in parallel, is the recycler oversubscribed, ...  etc

## Other areas needing work

- In addition to the items arising from the first review there are someadditional wish-list items that are on the interface between the experiments and the machine:
-   Muon Source
-   Targetry etc
-   Rebunching
- We are beginning to launch some activity on these items, but will need lots of help. These general Proton Driver meetings would bea good forum to discuss these interface items.

## Documentation

- The individual draft working group reports are being further developed. Aim to complete these by the end of January.
- An overall report that integrates together the individual working group reports is being prepared. It will probably by ~100 pages with a short executive summary. Aim to have the first draft of this report early February, in preparation for the next review.
- There are additional notes that have been written .... need some
- sort of notes database  task looking for a volunteer.

## Next Review

- We hope to have a second Proton Driver Scientific Advisory Group meeting towards the end of February, this time to review the draft integrated document (presenting the physics case for a Proton Driver).
- This will (hopefully) prepare the way to finalize the physics casedocument before delivering it to the Director.
- The review should also help us to identify/prioritize further work that will need to be done in the longer term.

## Physics Presentations

- Plan to have the physics case  presented by Working Group Conveners in this (General Proton Driver) series of meetings. The first four will be:
-          	19 Jan:	   Neutrino Oscillations
- 	26 Jan:    Neutrino Scattering
- 	2 Feb:     Muon Experiments
- 	9 Feb:     Pion and Kaon Experiments
- Other physics contributions and issues can also be discussed in these meetings.
- Colloquium to present the emerging physics case:  Jan 26th

## 2004 Workshop List

**BNL/UCLA –APS workshop**
- BNL, March 3-5, 2004
- http://www.bnl.gov/physics/superbeam/presentations.asp
**Physics with Multi-MW Proton Source (SPL)**
- CERN, May 25-27, 2004
- http://physicsatmwatt.web.cern.ch/physicsatmwatt/
**HIF04**
- Elba Italy, June 2004
- http://www.pi.infn.it/pm/2004/
**APS Neutrino Study**** **(year long effort)
- www.interactions.org/neutrinostudy
**Fermilab Proton Driver Physics Workshop**** **
- Fermilab Oct 6-9, 2004
- http://www-td.fl.gov/projects/PD/PhysicsIncludes/Workshop/index.html

## Future Workshops

- We would benefit from some sort of workshop series (new or existing) to develop the ideas, and eventually  prototype collaborations and LOI’s
- We have begun to explore having future joint Fermilab/INFN sponsored Proton Driver physics workshops ... starting this year ... but are only at the very beginning of this process.

## Getting Involved

- There is lots to do.  Hopefully these general Wednesday Proton Driver meetings will give the ongoing activities sufficient exposure so that those interested in helping can do so.
- If you have an interest in getting involved in the developing the physics case, or at the interface between physics and machine (targets, beamlines, rebunching, etc) please contact me (sgeer@fnal.gov).
- If you are interested in a specific physics area covered by one of theworking groups please contact one of the conveners.