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NA61 news and plans (May 2013-October 2013) Publications:

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Presentation on theme: "NA61 news and plans (May 2013-October 2013) Publications:"— Presentation transcript:

1 NA61 news and plans (May 2013-October 2013) Publications:
NA61/SHINE Collaboration meeting, Wroclaw, October 7-11, 2013 Publications: Measurements of Production Properties of K0S mesons and  hyperons in Proton-Carbon Interactions at 31 GeV/c Measurement of negatively charged pion spectra in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c and many preliminary results on p+p, p+C, p+LT and Be+Be: The 2013 Status Report is almost ready and it gives the comprehensive review of the recent achievements and plans (60+ pages). Detailed reports will be presented during this meeting. Thus, here only several remarks/additions on results and beams

2 Final results on pion spectra in p+p interactions at 20-158 GeV/c
(the first paper on the 2009 data) Many thanks to Antoni A.!

3 Final results on K0S and Λ spectra in p+C interactions at 31 GeV/c
(the last(?) paper on the 2007 data) Many thanks to Tomek and Joanna!

4 Preliminary results on low energy Be+Be collisions
(the first results from the 2012 and 2013 data) Many thanks to Ilona and Peter S. (and Maciek)!

5 Preliminary results on high energy Be+Be collisions
(the first results from the 2011 data) Many thanks to Emil and the Katowice group!

6 Preliminary results on Be+Be collisions
(the first results from the 2011 data) Be is surprisingly close to Pb Many thanks to Emil and the Katowice group!

7 Several publications are in preparation:
- NA61/SHINE facility paper (almost ready) - hadron spectra in p+C at 31 GeV/c (in drafting) - multiplicity and transverse momentum fluctuations In p+p at GeV/c (in drafting) (first indications of the important result, if confirmed, we may want to expose it and have two publications: - on multiplicity fluctuations and - on transverse momentum – multiplicity fluctuations) Drafting of further papers should start soon: - hadron spectra in pion+C at 158 and 350 GeV/c - chemical fluctuations in p+p at GeV/c - ...

8 News from Django on preparations of primary ion beams for NA61:
Interlock system designed and built to prevent high intensity (proton) beams from being extracted to the North Area during primary ion runs advancing as planned; prototype components tested; most cables pulled for the final system. will be under test at the start-up 2014 Ar beam commissioned in the ECR source, RFQ, Linac3 Ion intensity about 10 times higher than for Pb, with good stability over several weeks, not much tuning needed. One week commissioning will be enough at restart; operation is simpler than for Pb, and no oven refill needed during the run. Sputtering causes damage in several parts (i.e. plasma chamber) which now have to be considered “consumables”. Budget takes this into account. Xe beam being tested in South Africa (iThemba)

9 Ar run after LS1: current plan
Early June 2014: Restart source + RFQ + Linac3 with Ar June 16th: Commission LEIR with Ar (8 weeks) August 11th: Commission PS with Ar (6 weeks) September-December: commission SPS with Ar, prepare extraction at 6 momenta (13, 20, 30, 40, 80, 158A GeV/c) January 2015: restart complex after Xmas shutdown (2 weeks) February-March 2015: Ar run for NA61 in SPS North Area (2 + 6 weeks) April 2015: Linac3 maintenance

10 Tentative planning for the Xe run
Xe cannot be prepared in injectors in 2015: The Ar run followed by the Linac3 maintenance/repair then recommissioning of Pb in all injectors in view of the Pb-Pb run in LHC (currently planned for November 2015) Xe commissioning in Linac3, LEIR, PS & SPS early 2016 The Xe run for NA61/SHINE in 2017 6 momenta (13, 20, 30, 40, 80, 158A GeV/c)

11 ? ? Modification of the NA61 data taking plan needed November 2015:
Pb+Pb test ? /15

12 2014 proton period:

13 2015 NA61 argon run:

14 2015 proton period:

15 2014 duty cycle: FT cycle (72 or 75%), beam (32 or 33%)
2015 during the LHC filling: FT cycle (67%), beam (15%) FT cycle: sec with flattop 4.8 sec (4.8/10.8*0.72 = 0.32)

16 Summary of 2014/2015 SPS FT periods for physics:
2014: October 13 – December protons (all users) 2015: January 19 – March – argon (for NA61 only) 2015: June December – protons (all users)


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