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Hall A Status Hall A Collaboration Meeting June 9, 2011. Robert Michaels Acting Hall A Leader. Recent Activity Publications (please write archival papers ! ) Upcoming Schedule of Experiments Procedures to Decide 12 GeV Schedule

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slide1

Hall A Status

Hall A Collaboration Meeting

June 9, 2011

Robert Michaels Acting Hall A Leader

  • Recent Activity
  • Publications (please write archival papers ! )
  • Upcoming Schedule of Experiments
  • Procedures to Decide 12 GeV Schedule
  • Manpower and Budget
in memoriam
In Memoriam

ArunSaha

Friend, Colleague, Hall A Scientist

“He will be missed by his many colleagues, friends and associates, who will remember both his kind and gentle spirit and his many contributions to nuclear physics.  Arun is recognized world-wide as a leader in the study of nuclear structure …”

( JLab site-wide announcement , May 9, 2011)

slide3

Recent (2011) Activity in Hall A

Feb 22 Completed D - Threshold (B. Norum)

Mar 1 Bob Michaels appointed as acting HA leader

Mar 9 Completed N-Delta (N. Sparveris)

Apr 13 part I of SRC triple coinc. (E. Piasetzky)

Apr 15 Completed e08009 He4 (A. Saha)

May 6 Review of upcoming g2p/GEp (N. Liyanage, chair)

May 8 Completed x > 2 SRC inclusive (P. Solvignon-Slifer)

May 13 part II of SRC triple coinc. (E. Piasetzky)

May 13 begin 6 mo. Shutdown, prepare for g2p/GEp

slide4

12 GeV Experiments

(some still unrated by PAC)

Days Major New Equipment

(e.g. tritium target or SBS)

GMp (elastic FF at high Q2) 24 none

(Moffit et.al.)

A1n (neutron spin structure) 23 none

(Bogdan W., et.al.)

DVCS (GPDs) 100 none

(Hyde et.al.)

APEX (dark matter) 34 none

(Bogdan W., et.al.)

GMn, GEn (high Q2 FF) 75 SBS

(Bogdan W., et.al.)

GEp (high Q2 FF) 45 recoil polarimeter

(Bogdan W., et.al.) in SBS

Possible early running

Continued ….

slide5

12 GeV Experiments

(continued)

Days Major New Equipment

(e.g. tritium target or SBS)

SIDIS w/ SBS conditional SBS

(Bogdan W., et.al.)

F2n/F2p (d/u from He3/H3) 42 tritium target

(Petratos, et.al.)

Moller (precision electroweak) 344 Moller spectrometer

(K. Kumar, et.al.)

SIDIS w/ SOLID 90 SOLID spectrometer

(H. Gao, et.al.)

Worm-gear 35 SOLID spectrometer

(J. Huang et al.)

PVDIS w/SOLID 169 SOLID spectrometer

(P.A. Souder)

To be graded in PAC38

Continued ….

slide6

Possible Other Experiments

Major New Equipment

Hypernuclear Physics new 12 GeV prop. ? HKS, new septum magnets (conditional 6 GeV)

(Tang, et.al.)

PREX-II 25 none

(Michaels, et.al.)

SRC ? none ?

Polarized Proton SIDIS in preparation SOLID

Other new ?

slide7

“Strawman” Flow-Chart for Schedule

Hall A is the first to take beam in 12 GeV Era !!

Meanwhile …

Commissioning Phase

(Hall A = beam dump for tests and engineering runs. No physics promised, but may be possible ?)

Mid- 2013 - Fall 2014

Early Experiments ?

12 GeV Experiments Begin

(research-quality beam in FY15)

Build SBS ,

Stage Moller and SOLID Apparatus

Fall - 2014 - Fall 2015

SBS Experiments

Continue to Stage Moller and SOLID

~2015

Moller & SOLID Experiments

(interleaved with other experiments , e.g. SBS. need removable apparatus)

~2017+

slide8

How to Decide

Plan for Commissioning

Plan for Early Experiments

Schedule for SBS

Schedule for Moller and SOLID

Interleaving of Experiments

Depends on

Availability of Commissioning and Research Beam

Funding Realities

Scheduling Constraints of other halls.

Input from Users

Scientific Leadership of Lab

DOE deliverable: FY15

input from users
Input from Users

Hall A Coordinating Committee to Select a Planning Committee.

Suggested membership: subset of spokespersons of approved experiments.

E-mail and phone meetings prior to HA Collab. Mtg. (twice per year).

Chairman to report findings at HA Mtg.

Recommend priorities for sequence of commissioning and early experiments.

Recommend priorities for sequence and interleaving of large-project era experiments (SBS, Moller, SOLID).

manpower and budget exercises
Manpower and Budget Exercises

for Rolf, aiming towards FY18

Hall A manpower

  • Adding an electrical engineer (power supplies)
  • Made a young designer permanent (C. Soova)
  • Hope to add tech(s)
  • # of Scientist Staff to remain constant (rel. to FY2004)

Hall A budget desires ( supplemental to Ops )

  • 4.5 M$ SBS MIE (submitted)
  • ~0.8 M$ tritium target
  • 0.5 M$ each for DAQ & Compton upgrades
  • ~0.6 M$ possible Hypernuclear spectrometer
  • 21 M$ for Moller (fairly accurate; MIE not submitted yet)
  • 21 M$ for SOLID (very rough estimate)

completed

= 11 permanent + 2 postdocs

In progress

the future of hall a
The Future of Hall A ?

g2p/GEp

12 mo. Shutdown and

Early Experiments

no promised beam

Possible

Commissioning Experiments

SuperBigbite Era

Run Moller &

SOLID

Prepare Moller &

SOLID

2014

2012

2017

2018

2011

2013

2015

2016

Time (actual years)

slide12

Parting Thoughts

  • Hall A Leader position -- should be decided this summer
  • (I think)
  • An experiment planning process may be discussed by CC.
  • Start this in ~Oct, topics for winter collab. mtg.
  • Need to strengthen & increase the Hall A collaboration
  • Timely publications
  • Archival papers important !
  • Give seminars, colloquium, invited and
  • contributed talks at conferences.