H 4 beam line for GIF Adrian Fabich

H 4 beam line for GIF Adrian Fabich, EN-EA-LE GIF users meeting, 17 th February 2016

Overview � Beam optics and beam elements � Logging data � Magnets, � TIMBER � GIF collimators, XTDV data access (GUI to logging data) periods during 2015 � 27 th – 31 st August � 21 st October – 4 th November 17/2/2016 GIF period RD 51+GIF A. Fabich, EN-EA-LE 2

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

EHN 1 layout and GIF 62 0 48 34 0 m 17/2/2016 0 m G 0 IF m PP m E 1 34 EDMS doc. SPSXLHN 1000 2 A. Fabich, EN-EA-LE 4

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

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

Experimental scalers � Count rates from users’ setup � EXPT. GIF. 001 to EXPT. GIF. 004 – you define the registered counter: e. g. large scintillators/coincidence 17/2/2016 23/10 27/10 A. Fabich, EN-EA-LE 31/10 7 4/11

Beam performance changed? 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) … � 17/2/2016 A. Fabich, EN-EA-LE 8

XTDV mobile dump � XTDV. 022. 520 separating PPE 134 and GIF (PPE 154) � PPE 143 e. g. hosting RD 51 � Stops all beam but muons � Reference 17/2/2016 setting during GIF periods: IN-BEAM A. Fabich, EN-EA-LE 9

Collimators - default � 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) 17/2/2016 A. Fabich, EN-EA-LE 10

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

Dipoles Main B 5 horiz B 12 (access veto) Main B 6 Main B 3 (access veto) Main B 4 (access veto) 17/2/2016 horiz B 9 Main B 7 horiz B 8 Goliath A. Fabich, EN-EA-LE 12

Spectrometer magnets in PPE 134 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 CE SA R ma gn et sta tus http: //sba. web. cern. ch/sba/cesar/Cesar_manual. htm 17/2/2016 A. Fabich, EN-EA-LE 13

Fin a foc l uss ing Fin a foc l uss in g Beam focussing 17/2/2016 A. Fabich, EN-EA-LE 14

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

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

Conclusions � Default � beam settings known Beam reference file will be provided. � Performance � All reproducible beam elements were re-aligned during YETS 15/16. � Straight-forward instructions for checking beam performance available � Especially the spectrometer magnets can deteriorate the beam performance at GIF, e. g. during RD 51 runs. � Follow-up from meeting discussion: which beamline elements are published on TIM/DIP? 17/2/2016 A. Fabich, EN-EA-LE 17