Test Beam @ Fermilab Dutschlands gr246;223;tes 試驗(yàn)梁的“費(fèi)米實(shí)驗(yàn)室德國的GR和 246和 223；試驗(yàn)；

1、test beam fermilab vishnu v. zutshiniu/nicadd11/8/2021v. zutshi,calice tb meeting,desy,oct052acknowledgementsnerik ramberg for information, discussions and plots.11/8/2021v. zutshi,calice tb meeting,desy,oct053test beam facility at fermilabweb page for mtbf: /mtbf-w, or fermilab-at-w

2、ork mtbf 11/8/2021v. zutshi,calice tb meeting,desy,oct054test beam user areasn2 beam enclosuresn7 user stations (the last one is downstream of beam dump)n2 climate controlled hutsn2 control roomsngas delivery system (any two)noffice spacefree height 4m, free length upto 9m11/8/2021v. zutshi,calice t

3、b meeting,desy,oct055mtbf11/8/2021v. zutshi,calice tb meeting,desy,oct056facility detectorsn2 beam line cerenkov counters which can be operated independentlyn2 stations of x-y silicon strip detectorsnthree 0.5mm pitch mwpcs daqnthree 1.0mm pitch mwpcs acnetndaq will be minimum bias triggered. facili

4、ty detector data held in event buffers and read out during and after spill 11/8/2021v. zutshi,calice tb meeting,desy,oct057facility detectors11/8/2021v. zutshi,calice tb meeting,desy,oct058control roomelectronics roommt6bmt6acamacnimscintillator mt6sc4mt6sc3mt6sc2mt6sc1mt5 cerenkovms4 power supply s

5、ervice areanimupstream components:mt3scmt4sc1mt4sc2mt4 cerenkovmt5sctrigger11/8/2021v. zutshi,calice tb meeting,desy,oct059control roomelectronics roommt6bmt6adaq computer()camac crate 1camac crate 2camac crate 3camac crate 4camac crate 5mwpcmwpcmwpcsiliconms4 power supply service aread

6、aq11/8/2021v. zutshi,calice tb meeting,desy,oct0510switch yard 120 delivers mi beam to mtbf in conjunction with pbarnot more than 5% impact on collider and numi operationsanti-proton accumulator11/8/2021v. zutshi,calice tb meeting,desy,oct0511spill structurenprogram planning determines spill structu

7、renissue is time used up in beam extractionncurrently a spill is 4 sec. every 2 min.ncoupled with the 2k daq buffer limit 20hznthe current spill structure maximizes the overall duty cycle for mipp11/8/2021v. zutshi,calice tb meeting,desy,oct0512beamline operationn120 gev protons on 40cm of alnproton

8、 mode: 120gev protons transmitted through targetnsecondary mode: maximum momenta 66 gev minimum tune achieved so far 3.7gev droppable beam stops in user areanbeam spot from 3-5 mm2 to 3-5 cm211/8/2021v. zutshi,calice tb meeting,desy,oct0513p thresholdp thresholdp threshold120 gev66 gevscintcc 1cc 2c

9、erenkov results11/8/2021v. zutshi,calice tb meeting,desy,oct05144 gevcerenkov results (contd.)11/8/2021v. zutshi,calice tb meeting,desy,oct0515ratestune (gev)rate in mt6/spill e- fraction 120 800,000 0 66 90,000 0 33 40,000 0.7 % 16 14,000 10 % 8 5,000 30 % 4500 60 % 11/8/2021v. zutshi,calice tb meeting,desy,oct0516schedule/future possibilitiesn14