Review of previous Workshops from an experimentalists perspective

Review of previous Workshops from an experimentalist’s perspective J. Gerl GSI/FAIR Darmstadt, Germany FAIR Experiments and Accelerators Workshop Darmstadt December 2017

Hamburg 2015 Communication is key. . . Building and operating accelerators is real science! The FAIR suite of machines is really outstanding and unique. . . We experimentalists got a deeper understanding of the possibilities and physical limitations, problems, challenges and what is easy to achieve Messages conveyed: We really need beam time at GSI before FAIR starts A flat spill structure is indispensible for many experiments Experiment requirements go far beyond maximal beam current. . 18 2

APPA 18 3

APPA 18 4

APPA 18 5

APPA 18 6

CBM 18 7

CBM 18 8

NUSTAR 18 9

NUSTAR 18 10

NUSTAR Coarse Spill Structure at FRS S 4 hits /100µs 3 s spill 23 k. Hz Coarse spikes with up to 100 x hits compared to the mean value per 100 us interval. Voids with up to 50% empty time intervals. multiplicity /100µs mean 2. 9 DAQ processing time: 100µs → Only 1 hit /100µs contributes. Spikyness reduces data acceptance by up to a facotor of 3 !!!!

NUSTAR 18 12

PANDA 18 13

Darmstadt / Rheingau 2016 Activities on all aspects. . . Spikyness tackled from many sides Upgrade of all components going on Operation issues become important Perspectives for the future FAIR Phase-0 at GSI facility taking shape Test ground for FAIR and opportunity for physics programme Many advances of the machines reported 18 14

Ring-Targets 18 15

Machine-Experiment interface 18 16

FAIR Phase-0 18 17

Conclusions • H 4 F Detectors and Accelerators WSs essential for optimizing machines and experiments • Communication is indeed key • Many new ideas and initiatives resulted from the WSs • First results will show up in beam times in 2018 • Let us continue. . . 18 18

. . . thank you 18 19