1. Prospects of the ATF operation in FY2016 N. Terunuma, KEK 19 th ATF TB/SGC meeting Jan. 13 2016, LAL Orsay

2. KEK Roadmap Current roadmap (2014-2018) – J-PARC, SuperKEKB, LHC, ILC, PF http://www.kek.jp/ja/About/OrganizationOverview/Assessment/Road map/roadmap2013-E.pdf http://www.kek.jp/ja/About/OrganizationOverview/Assessment/Road map/roadmap2013-ReviewReport.pdf Next roadmap (2019-2023) – Review of future plan of each project has been started. – should be established in 2018. – It will be after the ILC decision by Government.

3. MoUs link to ATF ATF International Collaboration (since 2005) – revised and extended up to 2018 – http://atf.kek.jp/twiki/bin/view/Main/MoU KEK-CERN Collaborative Research Contract ATF/ATF2 is one of the keys on it.

4. Background of budget decision for FY2016 operation Detail of Government budget plan was opened in last week. KEK will receive a little bit more than 2015 but will not be sufficient for the commissioning of SuperKEKB; i.e., highly prioritized on-going project. Electricity cost is still higher level (twice since 2014). Then the executive discussion how to assign KEK funds to each project has been started to realize the reduced commissioning plan of superKEKB. Budget for KEK ILC group (ATF/STF etc.) is supported by these funds. Assignment of the budget FY2016 will be fixed at the end of February by following several reviews.

5. Background of budget decision for FY2016 operation KEK DG wish to slim down the projects because KEK has a lot of satellite projects. Of course, KEK has been leading the promotion of ILC but this promotion activity and R&D activity should be separately managed because of the budget. KEK DG request ATF/STF to focus on the R&D for ILC. It means we may face very little room for general accelerator R&D. We can/should show all of the plan at ATF are needed for ILC.

6. FY2015 Apr–Dec Shift Results Total 142 shifts more than 80 % for ATF2 goal 1&2

7. Electricity cost became twice. CERN/CLIC supported 2 weeks. No beam for Jan-Mar. Apr-Dec: 11 weeks, Jan-Mar: 7 weeks History of ATF Beam Weeks 2015/Dec, submitted max- operation plan to KEK. 2016/Feb-Mar, evaluation and decision by KEK.

8. Operation: concerns and mitigation? Unsufficient maintenance budget in past years Lack of spare unit especially for expensive one Possible beam-operation stoppers: – Injection/extraction Kickers: will receive new thyratrons soon. – LINAC klystrons: Last spare Klystron was used in 2015. Highly required. Should be ordered in 2016. Cost is equivalent for 7 weeks of beam operations. – Cooling facility No spare. Repair when broken basis.

9. Budgetary issue for ATF in FY2016 Operational budget: Electricity charge + Maintenance We submitted estimation of the electricity in FY2016 to KEK about 21 weeks operation, same as the past standard. Assignment of the electricity charge for ATF will be fixed in early March. We expect severe budget assignment then we should consider the trade off between a beam time and maintenance. Spares of the key components should be prepared. – LINAC Klystron should be purchased in FY2016. 180k US$. – Kicker Thyratrons have to be paid in FY2016. 60k US$

10. FY2016: 21 weeks requested to KEK ? ? ? ? ? ?