1. H4 beam line for GIF Adrian Fabich, EN-EA-LE GIF users meeting, 17 th February 2016

2. Overview 17/2/2016 A. Fabich, EN-EA-LE2  Beam optics and beam elements  Logging data  Magnets, collimators, XTDV  TIMBER data access (GUI to logging data)  GIF periods during 2015  27 th – 31 st August GIF period  21 st October – 4 th NovemberRD51+GIF

3. SPS North Area - schematics 17/2/2016 A. Fabich, EN-EA-LE3

4. EHN1 layout and GIF 17/2/2016 A. Fabich, EN-EA-LE4 EDMS doc. SPSXLHN10002 0 m 340 m 620 m GIF 480 m PPE134

5. Beam line - optics 17/2/2016 A. Fabich, EN-EA-LE5

6. Logging database 17/2/2016 A. Fabich, EN-EA-LE6  http://cern.ch/timber http://cern.ch/timber  Settings/readings of beam elements  XTDV only from 2016 onwards  Steps1-2: choose/add beam elements  Step 3: query for period of interest (download as ASCII file or graph) 1 1 2 2 3 3

7. Experimental scalers 17/2/2016 A. Fabich, EN-EA-LE7  Count rates from users’ setup  EXPT.GIF.001 to EXPT.GIF.004 – you define the registered counter: e.g. large scintillators/coincidence 31/10 4/11 27/1023/10

8. Beam performance changed? 17/2/2016 A. Fabich, EN-EA-LE8 Use CESAR for verification of settings  If beam performance changed e.g. EXPT.GIF.001 as reference  Check either individual status windows (access, magnets …)  Or quick view on NOTIFICATION pane Indicating all elements different from REFERENCE Beam line scintillators: XSCI.022.480, XSCI.022.481, XSCI.022.605  Typical hick-ups are  No beam from SPS  Access: XTAX closed, bends 2+4+5 OFF  Magnet element failed (restart or call CCC) …

9. XTDV mobile dump 17/2/2016 A. Fabich, EN-EA-LE9  XTDV.022.520 separating PPE134 and GIF (PPE154)  PPE143 e.g. hosting RD51  Stops all beam but muons  Reference setting during GIF periods: IN-BEAM

10. Collimators - default 17/2/2016 A. Fabich, EN-EA-LE10  Coll 01-07 are typically open around center position  Coll 08-09 are used for selection  Hadron+muon beam: OPEN (a few millimetre or more at center position)  Muons only: CLOSED (e.g. Coll 08=+38/+40, Coll 09=-40/-38) Do not close below a slit gap of 2 mm (might get stuck)

11. Collimators - logging 17/2/2016 A. Fabich, EN-EA-LE11 All collimators with constant settings  Minor clean-up early in the line for intensity  Left or right closing gap is not relevant

12. Dipoles 17/2/2016 A. Fabich, EN-EA-LE12 Goliath Main B3 (access veto) Main B4 (access veto) Main B5 (access veto) Main B6 Main B7 horiz B8 horiz B9 horiz B12

13. Spectrometer magnets in PPE134 17/2/2016 A. Fabich, EN-EA-LE13 Deflect the beam by typically a few mrad  Resulting in an offset of up to 0.5 m at GIF  So far only horizontal deflection CESAR magnet status http://sba.web.cern.ch/sba/cesar/Cesar_manual.htm

14. Beam focussing 17/2/2016 A. Fabich, EN-EA-LE14 Final focussing

15. Beam schedule 17/2/2016 A. Fabich, EN-EA-LE15  Beam setup during NA setup  Be prepared for first performance checks  First dedicated GIF period in the first beam weeks.

16. Air conditioning 17/2/2016 A. Fabich, EN-EA-LE16  Industrial order is with Finance  Planning meeting still this week  Minimizing impact on GIF operation

17. Conclusions 17/2/2016 A. Fabich, EN-EA-LE17  Default beam settings known  Beam reference file will be provided.  Performance reproducible  All beam elements were re-aligned during YETS15/16.  Straight-forward instructions for checking beam performance available  Especially the spectrometer magnets can deteriorate the beam performance at GIF, e.g. during RD51 runs.  Follow-up from meeting discussion: which beamline elements are published on TIM/DIP?