The run is aimed at Semi-Inclusive Deep-Inelastic Scattering (SIDIS) of muons off transversely polarised 6LiD target, as described in our proposal or in this talk. The experiment is located in the Experimental Hall North 2 (EHN2), building 888, on the Prévessin site of CERN.


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Run schedule

11.04. Commissioning First beams for NA commissioning.
25.04. Beam to NA for physics NA64mu main user; possible spectrometer partial commissioning with beam.
16-17.05. Changover Changeover from NA64mu to COMPASS. No beam until Tuesday 17.05 at 18:00. Survey.
17.05. First beam tuning First beam tuning and steering.
18-19.05. AMBER tests Days dedicated to AMBER p-bar production tests.
20.05. Commissioning First day with COMPASS as exclusive user of the beam. Detector and trigger commissioning with muon/hadron beam.
25.05. Survey During the MD, for the detectors not surveyed on 16-17/05.
01.06. Goal Start of the data taking for physics.
07.06. W01 Start of the first data taking period.
22.06. W02 Start of the second data taking period.
06.07. W03 Start of the third data taking period.
20.07. W04 Start of the 4th data taking period.
XX.11. End of the run


Important contacts

Calling from outside CERN:

  • Landline numbers (7....) or CERNphone (6....): dial +41 22 76 plus all five digits.
  • Mobile numbers (16....): dial +41 75 411 plus last four digits.

The data are taken from the CMAD2012 MySQL database on pccodb00 and can be updated there.

Showing active roles on 14. 11. 2022
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Responsibility Name Phone numbers
Control room (892-R-D10) 7 8058
DEXSO/Gas TESSAROTTO Fulvio 16 4826
Deputy run coordinator PEŠEK Michael 16 3935
Deputy run coordinator PIRES Christophe 6 6506
EHN2 (888) TSO RAE Bastien 16 7388
EXSO LEVORATO Stefano 16 4850
Run Coordinator MARTIN Anna 16 0810
Spokesperson PARSAMYAN Bakur 16 4463
Spokesperson TESSAROTTO Fulvio 16 4826
Technical Coordinator LEVORATO Stefano 16 7431, 16 4850
Week coordinator 16 4863
SPS Control Room (CCC) 7 7500
Polarised Target Coordinator DOSHITA Norihiro 16 8996
Polarised target expert PEŠEK Michael 16 3935
DAQ FROLOV Vladimir 16 5994, 6 5098
DCS PIRES Christophe 16 4872, 6 6506

Useful links

Experimental setup

COMPASS setup, upstream half

COMPASS setup, upstream half

COMPASS setup, downstream half

COMPASS setup, downstream half

The experimental setup consists of a beam telescope, solid-state transversely 6LiD target and a two-stage magnetic spectrometer. The spectrometer has wide angular coverage and robust tracking. Particle identification is ensured by muon filters and a RICH detector. It contains also electromagnetic and hadronic calorimeters.