1. 1 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 WP 12.4 HOM Diagnostics Roger M. Jones Contribution from Cockcroft Institute and The University of Manchester Ref: http://eucard2.web.cern.ch/activities/wp12-innovative-radio-frequency-rf-technologies.

2. 2 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 TASK 10.5HOM DistributionR.M. Jones Sub-Task NameCoordinating Institute/Univ. 12.4.1HOMBPMDESY 12.4.2HOMCDCockcroft/Univ. Manchester 12.4.3HOMGDUniv. Rostock WP 12.4 SRF HOM Diagnostics Liangliang Shi is making good progress on a circuit model of phase measurements and will apply this model to angle wakes. Nirav Joshi recently joined the University of Manchester and has made progress on on Cavity Diagnostics via the GSM on eigenmodes and Qs. Thomas Flisgen recently successfully defended Ph.D. and his thesis will be published as EuCARD2 monograph 33.

3. 3 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 WP 12.4 Milestones and Deliverables Milestone Deliverables Milestone M82 combined with Deliverable D12.7 All in WP12.4 provide contributions to this report.

4. 4 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 Characterization of HOMs in the 8-Cavity 3HC Module –Nirav 1.Introduction -All 2. HOMBPM Requirements (specific bands, R/Q etc) –Nicoleta 3. Overview of Simulation Methods and Results (GSM, CSM etc) –Thomas, Nirav i) analysis of monopole bands (eigenmode freqs and Qs –for single cavity and 3HC Module) –Thomas, Nirav ii) analysis of dipole bands (eigenmode freqs and Qs Qs –for single cavity and 3HC Module) –Thomas, Nirav 4. Experimental results (room temp, cryo, and module measured –rf and beam driven) -Liangliang 5. Final remarks -All Deadline -7 th March Complete! Outline for D12.7

5. 5 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 WP 12.4 Pubs: Up to April 2015

6. 6 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015 On track for milestones and deliverables –Deadline end of Feb 2016 internally (submit to Peter end of March 2016) Conf. pubs HOMSC14 (Thomas), Vol 33 EuCARD2 Ph.D. thesis monograph (Thomas), HOMSC16? IPAC16? Upcoming HOMSC16 in NIMA or PRST-AB? More? Ensure all pubs have EuCARD2 accreditation and are also uploaded to EuCARD2 to obtain a paper number -send any missing ones to me! Upcoming (March?) bench-top measurements on characterizing 3.9 GHz cavities with specified loads will facilitate comparison to simulation –who will participate? Phase and angle-wake measurements will be made in 2016 –and compared with circuit models and grid-based simulations. Attend HOMSC16 in Rostock (22th-24th August 2016.), WP12 at Daresbury (4- 5 th April 2016), EuCARD2 annual meeting in Malta (26 th -28 th April 2016) WP 12.4 Summary

7. 7 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015  According to article 14.7 of the Consortium Agreement, all publications need to include an acknowledgement text:  Long version: "The research leading to these results has received funding from the European Commission under the FP7 Research Infrastructures project EuCARD-2, grant agreement no.312453”  Short version: "The work is part of EuCARD-2, partly funded by the European Commission, GA 312453." Consortium Acknowledgement

8. 8 EuCARD2/WP 12.4, R.M. Jones, Cockcroft Inst., 23 rd November 2015  Overview of SRF HOM Diagnostics task, R.M. Jones (University of Manchester/Cockcroft Inst.)  HOM-based Beam Phase and Position Measurements of FLASH and XFEL Cavities, L. Shi (DESY/University of Manchester)  Characterisation of HOMs in FLASH and XFEL Coupled Cavities using GSM, N. Joshi (University of Manchester)  Progress On SCC Simulations in FLASH and XFEL Cavities, T. Flisgen (University of Rostock) WP12.4 Talks in April WP12 Meeting at the Cockcroft Inst.