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Minutes of Meeting : NorduCLIC board meeting, August 31, 2010
Agenda
1. Attendance
2. Approval of agenda
3. Minutes of last meeting (Erik)
4. Welcome to the Aarhus group as new NorduCLIC Member
5. Reports on the progress in the CTF3 test program this summer at CERN (Roger, Volker and Erik)
6. The outcome of the extraordinary CTF3/CLIC Collaboration Board meeting 27 August, organized in view of the recent cuts in the CERN CTF3/CLIC Budget - see http://indico.cern.ch/conferenceDisplay.py?confId=105031 (Steinar and Tord)
7. Discussion of the proposed Nordic TIARA organization (see attachments - Tord)
8. Date of next meeting
9. Any other business
1. Attendance of the meeting
Present :
Tord Ekelöf (TE)
Kenneth Österberg (KO)
Erik Adli (EA)
Volker Ziemann (VZ)
Roger Ruber (RR)
Steinar Stapnes (SS)
Flyura Djurabekova (FD)
Kaj Nordlund (KN)
Søren Pape Møller (SM)
Ulrik I. Uggerhøj (UU)
Partial attendance :
Absent :
Jakob Esberg (JE)
Kyrre Næss (KN) / Ole Røhne (OR)
2. Approval of agenda
Approved.
3. Minutes of last meeting (Erik)
EA: pointed out that these minutes, including appendix, contain substantial information about the NorduCLIC program. Comments can be given later as well, since not everyone were aware that the notes were posted on the indico page.
4. Welcome to the Aarhus group as new NorduCLIC Member
The new board members from Aarhus, UU, SM and JE (not presented) were welcomed by the original board.
5. Reports on the progress in the CTF3 test program this summer at CERN (Roger, Volker and Erik)
RR:
Beam in TBTS on a couple of occasions. Some minor and major problems, now more or less solved. Results so far: ~ 4 MW rf power into accelerating structure (out of nominal ~60 MW), this corresponds to ~4 MeV acceleration and ~16-20 MV/m - a factor 5-6 off the target gradient of 100 MV/m. Major outstanding issues: calibration, understanding BPMs, PETS conditioning, accelerator structure, sub-degree X-band timing (~ fs). 3 GHz phase-shifter. TBTS soon ready to run in nominal mode, with automatic conditioning day and night.
EA:
TBL: only 1 out of 16 PETS installed. Real deceleration studies can only be done with at least 8 PETS (25% deceleration). However, tests of TBL PETS and commissioning of beam line and energy measurement instrumentation is in progress. Beam in TBL, on 2-3 runs. Always with an uncombined beam with max. 3A. Almost full transmission of line has been achieved, PETS power production is nominal, first attempts on energy measurement in slit dump has been performed - hardware seems to work well. VZ: when is the segmented time-resolved energy dump ready for installation? EA: probably not before the (short) winter shut-down).
FD:
Some comments on Helsinki work : studying electric field on surface and tension due to electric field. Some effects of the field on the surface observed. Comparing Helsinki models with results from DC group. Already submitted three publications on the Helsinki models. It seems that the Helsinki method is considered valid by the community. Current focus: study what happens with a DC electric field. Studies will be extended to rf fields later. First it is desired to study separately the effect of electric field and magnetic field. A publication will be circulated to the NorduCLIC board, when accepted, in order to describe in more detail the Helsinki work.
UU:
Overview of Aarhus activites:
Jakob Esberg, Ph.D. student: Improvement of the Guinea-Pig code, focussing on improvement of Trident-production models. The improvements are based on experimental work on QCD in strong field. Trident production: e- on e+ or whole bunch, directly producing pairs via virtual photon (as opposed to coherent pairs produced via real photons.).
6. The outcome of the extraordinary CTF3/CLIC Collaboration Board meeting 27 August, organized in view of the recent cuts in the CERN CTF3/CLIC Budget - see http://indico.cern.ch/conferenceDisplay.py?confId=105031 (Steinar and Tord)
Council in June: asked CERN to perform drastic cuts of ~350 MCHF over 5 years period (2011-2015). 1/3 of cuts have hit CLIC/CTF3 projects -> CLIC cut of ~ 20 CHF per year. Previously planned CERN budget increase for the CLIC project is now cancelled, and replaced by a slight increase in material budget.
2012: "all accelerator complex shut down": full interpretation for CLIC/CTF3 still to be performed, but will probably wait until next year.
Time-change of CDR: unchanged.
SS: clear that cuts are unavoidable. However, it is important to have a goal of 2016 in the CLIC-planning (e.g. "interim TDR" ?) [instead of working towards a goal in 2010]. Important for collaboration partners to decide on a revised plan up to 2016. Plan to council in 2016: personnel more or less flat, material budget will grow. Rationale: material more difficult for external collaborators to provide than personnel. TE: we must hope for a substantial increase in the external collaboration contributions.
TE: differences ILC and CLIC. CLIC: CERN requests prototype work. Advantage for CERN. ILC: no lab/finance org. requester; groups coming together
Timescale for comparison / choice between CLIC and ILC? SS: not clear yet. Must hope that we get clear guidance from physics results (e.g. discovery or exclusion of SUSY at ILC-level energies).
A good structures
SS: it's time to think about what we, as Nordic collaborators, can contribute in the next phase (2011-2016). In Norway: timing fits quite well with 2012. In Sweden: timing coincide with new persons in the SRC. In Finland: current projects to ~2013, after that new funding might be required.
UU:
Denmark: will apply for a pool of money by ~November. Will in particular focus on strengthening the contribution to CLIC/CTF3. Will focus on topics related to beamstrahlung and Machine-Detector Interface (MDI). VZ: Uppsala has some experience in these fields (post-collision line) -> potential synergies. SS: sounds like an important subject, and well suited for definition within November.
7. Discussion of the proposed Nordic TIARA organization (see attachments - Tord)
TE:
Important cross-talk between TIARA and CLIC, therefore discussed here.
TIARA: proposal for FP7 EU-project (preparatory phase project). During 3 years, TIARA will investigate how to sett up accelerating network in Europe. Network should then be established 2013.
Uppsala: one of 11 beneficiaries, on behalf of all Nordic universities. Brussel suggests: the Nordic universities be subcontractors to Uppsala. In this case: >= 50% of the work for each item must be performed by Uppsala.
A summary of work packages, and the involvement of the Nordic partners, have been prepared by TE, and are attached. Clarifying of phrasing: the defined Nordic partners role are not unique in TIARA.
TE: requests comments and approval for this Nordic TIARA-node structure, as soon as possible. The Nordic node will be a special node in TIARA, something which has required great efforts from TE and TIARA to get in place.
TE: propose to formalize the Nordic TIARA cooperation. Uppsala will, by the TIARA-structure, be the one canalizing TIARA-money to the partners. SS: can we transfer money as bills for consultancy? TE: probably. KN: must verify in Helsinki if you can do it this way. Nordic partners promise answers and clarification by end of week.
TE: a TIARA board would have a big overlap with NordCLIC board, but might have to be a separate body. To be discussed.
UU: happy with proposal.
8. Date of next meeting
Next meeting: just before ILWS 2010, october 18th, 12:00-13:30. Preliminary booking: 60-2-006 (just above R1 and Main Auditorium).
9. Any other business
There are minutes attached to this event.
Show them.
