2. Setup beam intensities for FCC-hh

3. Use of safe beams for machine
SPS and LHC both have a definition of a ‘setup beam’ intensity, considered an intensity that can never harm any of the machine components (e.g. 5E11 at 450GeV ~1E10 at 7TeV)
So-called Setup-Beam flags allow for masking of a subset of interlock channels for well defined commissioning and measurement phases, e.g. loss-maps, finding collisions, MDs,…
Using these equations implies a prior basic setup of the machine & protection systems (COLL)

4. SBF equations + Recent HighRadMat Test for damage to sc materials
Hydrodynamic tunneling at E>

5. Safe beams for FCC
Study of whole hadron accelerator complex at CERN (energy range from 50 MeV – 50 TeV)
Assuming E_inj=3.3TeV, E_flat_top=50TeV,
emittance 2.2um, i.e. ~0.1mm
at beta=100m
Yuancun Nie, R.Schmidt, et al :
” Interaction of 50 MeV - 50 TeV protons with
solid copper and graphite targets in hadron
accelerator complex at CERN”

6. Melting of copper as f(E,𝜺)

7. Summary
Safe beam at 50TeV in the order of 5E8 (1E10 for 3.3TeV, i.e. comparable to current dynamic range of BPM system)
Setup of FCC beams can be done with such smaller intensities at flat top provided systematics (‘pilot’, nominal and train) are less dominant or deterministic

8. FCC
Special technologies WP12
Magnets and Machine Protection

9. Powering, protection, architecture for high field circuits
SPS and LHC both have a definition of a ‘setup beam’ intensity, considered an intensity that can never harm any of the machine components (e.g. 5E11 at 450GeV ~1E10 at 7TeV)
So-called Setup-Beam flags allow for masking of a subset of interlock channels for well defined commissioning and measurement phases, e.g. loss-maps, finding collisions, MDs,…
Using these equations implies a prior basic setup of the machine & protection systems (COLL)

10. Concept, architecture of machine protection and interlocks
SPS and LHC both have a definition of a ‘setup beam’ intensity, considered an intensity that can never harm any of the machine components (e.g. 5E11 at 450GeV ~1E10 at 7TeV)
So-called Setup-Beam flags allow for masking of a subset of interlock channels for well defined commissioning and measurement phases, e.g. loss-maps, finding collisions, MDs,…
Using these equations implies a prior basic setup of the machine & protection systems (COLL)

11. HTS Magnet protection
SPS and LHC both have a definition of a ‘setup beam’ intensity, considered an intensity that can never harm any of the machine components (e.g. 5E11 at 450GeV ~1E10 at 7TeV)
So-called Setup-Beam flags allow for masking of a subset of interlock channels for well defined commissioning and measurement phases, e.g. loss-maps, finding collisions, MDs,…
Using these equations implies a prior basic setup of the machine & protection systems (COLL)