1. NA61 news and plans News from other labs/experiments
Collaboration meeting, Cern, June 6-10, 2011
News from other labs/experiments
Progress since the last collaboration meeting
(October 2010)
News on data taking in 2011+

2. News from other labs/experiments
Earthquake in Japan stops data taking by T2K for about one year,
Significant effort to analyze already taken data.
Pierre Auger Collaboration decided not to construct
the Pierre Auger North Observatory.
Results for RHIC and LHC confirm the NA49 data and interpretation
on the onset of deconfinement.

3. The horn
The step
Confirmation of the importance of the NA61 ion program

4. Progress since the last collaboration meeting
First ion beams in NA61!
(Nov/Dec 2010) O N C B
at 13A GeV/c Be Li He

5. Progress since the last collaboration meeting
Test of secondary light ion beams (Nov. 22 – Dec. 6, 2010)
NA61/CERN status report: SPSC
The Z-detector prototype did not work,
new design is under preparation

6. Secondary ion beam Z2 spectra at 13A GeV/c
The H2 beam line
The H2 fragment separator

7. PSD construction close to completion
Electronics for full PSD ( (spare) sets) is ready and tested,
32 sets have been installed in existing 32 modules.
The next beam test takes place this week.

8. He beam pipe installed and tested in
VTPC-1 and VTPC-2
The beam test takes place this week.

9. He tube ready for installation
PSD

10. Software upgrade
Proposal for the NA61 software upgrade was recommended
by the CERN PH-SFT committee (Feb. 10, 2011),
and the requested support was approved by the CERN Directorate
The core group worked at CERN in March-April 2011

11. Good progress on
Virtualization
Data base and bookkeeping

12. Calibration moving towards the end of the 2009 data calibration,
first dE/dx and ToF calibrations,
No major problems, but still many things to do ...
in spite of well organized effort of many of us

13. Analysis
Paper on pion production in p+C at 31 GeV/c passed the CERN review,
it is submitted to arXiv: and PRC,
the revised draft is in preparation
Preliminary results on:
- K+ spectra and
- y-pt spectra of negatively charged pions
In p+C interactions at 31 GeV/c are released

14. First look at the calibrated 2009 data
impressed by
high statistics

15. Welcome in NA61! Three new institutions joined us
University of Belgrade
University of Wroclaw
University of Nova Gorica
Welcome in NA61!

16. News on data taking in 2011+
1) TEST: canceled, but now several days this week
We will ask for a parasitic running a week before physics
with proton beams
2) PHYSICS: from July 29, 8:00 to September 19, 8:00
14 days p+p at 13 GeV/c
35 days p+p at 158 GeV/c
4 days p+Pb at 158 GeV/c
3) TEST+PHYSICS: from November 7, 8:00 to December 7, 8:00
10 days Be+Be at GeV/c
10 days Be+Be at GeV/c
10 days Be+Be at GeV/c

17. NA61 protons
NA61 ions

18. 2012+
LHC will run in 2012
A long (15+ months) LHC shutdown is planned in 2013+
It is under discussion when the shutdown will start and
whether during the whole LHC shutdown period
the SPS will also be closed