YETS 202122 Update and Latest RB 2021 Schedule

YETS 2021/22 Update and Latest RB ( 2021 Schedule and ‘Physics Balance Sheet’, NA 61, Amber, Muon. E, Na 64 m, CAST, PUMA ) M. Brugger for the EN/EA Group Many thanks to all teams involved December 8 th 2020

YETS 2021/2022 Schedule - Baseline • • • J. Coupard et all LHC orbit closure test in 2021 (w 39/40) followed by annual LHC maintenance EDMS 2439145 - version 0. 2 Stopping all beams on 15/11 in order to start LHC in Feb. 2022 MKP-L replacement needed latest for 2023: available in 2021 -> baseline for 22/23 (13 w needed) Next iteration March 2021 based on update from LHC Experiments FT Physics: focus on high-statistic runs (NA 62/COMPASS), M 2 pilots and most urgent test beams No ions in 2021 -> maximizing proton physics and aiming for early 2022 physics start (LHC & FT) (optimizing proton availability and allowing for earlier stop) December 8 th 2020 EACM Update 2

ED Discussion & Recent RB • Focus on ion operation and 2021 schedule/experiments • 2021 • • • no ions, present schedules and our strategy confirmed 2/3 of usual proton year with current schedule for AWAKE/Hi. Rad. Mat/MDs -> ok EHN 2 / AMBER / NA 64 m / Muon. E • • • M 2 pilots confirmed as critical input for final 2022 -2024 scheduling AMBER considered for approval but on a sequential basis, keeping M 2 options open CAST: • • can continue for the requested three months the 70 k (funding for CRG) to be discussed between RCS and the collaboration December 8 2020 EACM Update 3 th

BACKUP Follow-up Discussion-10/2020 SLIDE 4

Planned intensity ramp in SPS 2. 5 2. 3 2 Intensity [1 e 11 p/b] 2 1. 5 2. 3 1. 8 1. 5 1. 8 MKP-L heating limit 1. 5 1. 3 MD / commissioning LHC operation 1 0. 5 0 2021 o o 2022 2023 2024 Intensity ramp up through MDs / beam commissioning • Requires scrubbing run for each intensity step to mitigate e-cloud • Requires MDs to master challenging beam instabilities and minimize beam losses High intensity studies in 2022 crucial for decision points on further upgrades IEFC, 9 October, 2020 H. Bartosik, G. Rumolo 5

Decision points on potential further upgrades IEFC, 9 October, 2020 H. Bartosik, G. Rumolo 6

No Ions in 2021 • NA 61 as main user with 1 + 3 weeks (+ESA/NASA and a few other test beam) • Setting up SPS FT ion operation would come mostly in addition to 270 h slip stacking constrained by: • availability of RF experts • dedicated setup in the injector chain (regular ion cycles as from summer) • DSO tests, tuning of EA transfer and beamlines (few days at least) Impacts: COMPASS / NA 62 / AWAKE / Hi. Rad. Mat • NA 61 commissioning (TPC mainly) to allow for 21/22 modification if needed -> proposed usage of thick target (aiming to verify new readout system – 1 k. Hz) • Balance sheet: 2021 1+3 w, 2022 6 w open charm -> = 2022/23 ~9 w physics Clear overall advantage in prioritizing 2021 proton physics. 2022+ options for longer FT ion operation to be investigated December 8 th 2020 EACM Update 7

M 2 – Pilot Runs & Run-3 Schedule • Pilot-run status (NA 64 m, Muon. E, Proton-Radius) • approved infrastructure modifications on-going • schedule tight, but feasible for NA 64 and AMBER • Muon. E possibly not ready for pilot run for 2021 (final news/decision in January SPSC) • AMBER: additional infrastructure needs and beamline/target modifications only as from 2023 • target area shielding (needed for Drell. Yan) [RP limit reached at fence location] -> ECR on-going (~150 blocks (checking how much we can re-use) + related beam line modifications) • Funding/collaboration: aiming for overall approval, but not necessarily for detailed schedule • Muon. E • Final implementation: major beamline modifications, platform & temperature stabilization (0. 3 deg) -> to be designed (CEDAR-like) > hostlab (overall AC area? ) • detector cooling focus to be recommended • Running all experiments and covering required data taking will extend into Run-4. Focus on optimizing overall Run-3 schedule w/o blocking experiments early on. December 8 th 2020 EACM Update 8

2021 Schedule & FT Physics • SPS FT: reaching 400 k cycles in 2021 (compared to 600 k usually) • COMPASS cannot do full transversity run in 2021 -> 2022 `slot required anyway • AWAKE: initial request 12 w -> IEFC 19. 6. 8 w -> now at 51 d (7 -8 w) -> agreed with collaboration -> impacting ~6% of FT physics • Hi. Rad. Mat: reduced to 3 slots -> FT physics impact ~1 -3% (1% in 2018) • SPS available intensity -> ok, but needs detailed follow-up/preparation • COMPASS: 150@T 6 (stability important: 2 -3 w of stable intensity each) • NA 62: 60@T 4 • NA 62 dump-mode for a few days (80 -90@T 6) (ok with TAX) • would be compatible when scheduled with AMBER/MUONE • T 2 intensities to be optimized (e. g. for NA 64) • • ISOLDE: baseline for starting physics June 21 st AD/ELENA: starting August 23 rd (so far no margin) n. To. F: September 27 th (advancing well, n. To. F experiment will start commissioning in July ) East-Area: October 10 th critical path -> T 8 operation focus, CLOUD option maintained December 8 th 2020 EACM Update 9

CAST – 2021 Request • June 10 th RB: CAST data taking period up to the end of 2020 (total data taking time of ~6 months), but: • COVID-19 impact (delayed maintenance of the first cooling tower, etc. ) -> CAST started data taking on August 3 rd • maintenance of the second cooling tower could not be shifted from October to 2021 -> stop data taking between October 9 th and November 19 th -> data taking time for CAST in 2020 to only 3 months before the Xmas shut-down • Analysis: improved anti-coincidence technique -> better distinguish EMI/EMC parasites vs DM axion candidates • Follow-up discussions with SPSC referees took place (ADMX-like analysis) • 6 months data taking required to cover exclusion area • 10 Ph. D students rely on the full data set of 6 months • Collaboration and their funding agencies have agreed that the magnet/cryogenic operation cost and the related cryogenic service team could be financed if required (~70 k) • TE/CRG and other services ok The forecast of CAST concerning the estimation of the exclusion plot after having the full 6 months of data taking is illustrated in red December 8 th 2020 EACM Update 10

PUMA – Technical Review Conclusions • Technical review carried out November 10 th • Initial summary provided to EP/ATS management (slides) • final review report (link) submitted early last week including the updated TDR (link) • ECRs (AD/ELENA and ISOLDE) in circulation for approval (EDMS #2151516 and #2307820) • Detailed and successful analysis of all technical aspects (vacuum, transport, etc. ) • Specific discussions (and related TDR update) on pbar/ion transfer/measurement trap • Review board agreed on a very positive recommendation for an approval of the experiment in the upcoming RB, provided the required resources can be confirmed • Remaining funding (1 MCHF for 2021 -2023) is already part of MTP targets already considered in the 2020 exercise (no additional request during 2021 MTP exercise, only remaining uncertainty for 2022/23 depending on Diesel/Crane, likely covered) Many thanks to all reviewers, involved technical and service groups and the PUMA collaboration. December 8 th 2020 EACM Update 11

In Summary • NA 61 & Ions: • 2021 focus on proton FT physics and then possible 22/23 8 w+ ion data taking • M 2 Pilot Runs & Run-3 Schedule: • pilot runs essential to optimize overall Run-3 schedule • AMBER approval important (collaboration/funding) • Run-3 flexibility to be maintained • 2021 FT Physics • reaching about 2/3 of nominal proton FT year, AWAKE/Hi. Rad. Mat ok • AD/EA/n. To. F -> short runs and possible margins to be profited from • CAST • additional 3 months data taking in 2021 -> collaboration can cover CRG M&O costs • PUMA • excellent technical review, green light from reviewers & compatible budget in 2020 MTP December 8 th 2020 EACM Update 12