Summary of the Meeting of the PS Management Board
held on 14.10.2002
Present : S. Baird, J. Boillot,
M. Chanel, G. Daems, J.P. Delahaye (Chairman), B. Frammery, R. Garoby, J. Gruber,
H. Haseroth, M. Lindroos, E. Métral (Staff Association), K.D. Metzmacher,
S.L. Neboux (Secretary), J.P. Potier, J.P. Riunaud, K. Schindl
Excused : G. Geschonke
* * * * *
1. Follow-up of previous meeting and matters
- No comments on the last PSMB meeting which took place on 16.9.2002.
Due to meetings on the A&B Staff Plan and status review of the LHC
project, it was not possible to hold a normal PSMB in the meantime.
atoms: two days after the last meeting the ATHENA
collaboration announced the first controlled production of large numbers
(50000) of antihydrogen atoms at low energies using the Antiproton
Decelerator (AD). On behalf of the PSMB J.P. Delahaye congratulated
the ATHENA collaboration for this success.
- ABMB 23.9.2002
: J.P. Delahaye gave a short résumé of these two meetings.
are available on the A&B web pages. S. Myers informed the ABMB that
a Chamonix 2003 workshop, organized by A&B Division will take place
during the first week of March 2003. For the PS Days in Evian the
aim was to give information to as many people in the division as possible
on all activities in PS. The Chamonix workshop, however, will be focused
entirely on the LHC Project from the injectors to the machine itself,
as previously done by SL Division for the LEP Project, with the participation
of people from several divisions. A Steering Committee, initially headed
by S. Myers, will be set up to decide which topics should be discussed
and then to nominate Session Chairmen accordingly. It is expected that
the workshop will last six days (Monday to Saturday included). Discussions
- Modifications PS area during next shut down: M. Chanel presented
for modifications in the PS area during the next shut down, for approval
by the PSMB. Magnets required to satisfy the needs of ions for LHC in
the Linac 3 LEIR PS lines have been found, but one of them (bending magnet
ITLBHZ10, weighing 18 tons) will be difficult to put in place in such
a complicated area. It entails moving two PS main magnets, as well as
removing dump D2 magnets which are no longer used. Members of PS/AE and
TIS are checking any consequences that this may have. Although it would
be preferable to install these magnets during the coming shut down, tests
must be carried out to make sure the replacement magnet is working, otherwise
a new one will be required, which will then delay installation work. The
PSMB agreed that M. Chanel should make a planning and contact the teams
involved to see if installation work during the next shut down is feasible.
- Honorary Member: it was accepted unanimously by the PSMB that
H. Schönauer becomes an Honorary Member of the division for one year
as from 1.11.2002.
- 2002 budget situation : J. Boillot presented the current situation
of the PS 2002 budget with figures for exploitation and projects paid
and committed. It is not possible for the division to do anything about
payments, but groups should make sure that 100% of the 2002 budget is
committed before the end of the year. The situation will be reviewed again
in November. K. Schindl asked for confirmation that commitments on this
year's exploitation budget will not be taken from the 2003 budget if only
paid for next year, as has been the case previously. J. Boillot will raise
the question with A. Naudi. Action : J. Boillot
- Annual Report : as previously arranged B.W. Allardyce will compile
the last annual report of PS Division. He would prefer to do this before
the end of the year as the beginning of the year will be more than usually
busy because of the restructuring of PS and SL. A message has been sent
to Group Leaders and potential authors. Contributions should be sent to
him in November, so that the editing can be done in December.
- Notice boards : in preparation for the shut down work, G.
Daems proposes to install notice boards in strategic places at the
entrance to the machines, East Hall, CTF, etc. to inform people that
these are controlled areas and to indicate restrictions and safety
of PS control room (MCR) : measurements of integrated dose
equivalent performed over a period of three months in front of the
MCR and of the adjacent conference room have shown radiation
levels compatible with its classification as a supervised area
rather than as a controlled radiation area. Therefore the MCR and
the conference room, as well as the access gangway, can be classified
as supervised area, where wearing of a film badge is not required.
The rest of the South Hall remains controlled radiation area. The
radiation warning panels have been displaced accordingly.
- MAPS 2002 : a decision should now be taken concerning the second
part of award of premiums for exceptional services, as well as the award
of exceptional steps for newcomers at the end of the probation period.
J. Boillot will send a mail to Group Leaders with the quota for their
group. Group Leaders should send their nominations to J. Boillot and a
decision will be taken at a November meeting of the PSMB. Action :
J. Boillot, Group Leaders
- Shut down : the PS will stop in 2 weeks' time on 28.10.2002 and
the machines will be accessible as from 11.11.2002. A meeting to review
the work to be carried out during the shut down will take place on 2.11.2002.
- Call out lists : S. Baird reported problems on several occasions
for the MCR to contact people responsible for equipment, and Group Leaders
when a decision has been required to delay certain repairs until the next
working day. J.P. Delahaye said that if it was not possible to contact
people responsible for equipment and Group Leader, the MCR should contact
the Division Leader, and in case of absence, the Deputy Division Leader,
for a decision to be taken.
- PS pole face winding : the PFW power supplies will be overhauled
during the forthcoming shut down. J.P. Riunaud recommends to make sure
that all the reference functions controlling the PFW currents are not
- AD record : AD reports a record intensity of
3.2 107 antiprotons per pulse in the ejection beam line at
- LHC pilot beams in PSB : ways to produce this special
single bunch beam to explore the LHC have been started in the PSB, and
"any" beam appears feasible in the parameter space 5 109
< p/bunch < 1,1 1011 and 0.8 µm < transverse
normalised rms emittances <2.5 µm.
- SPS energy calibration : a precise energy calibration of the
LHC proton beam will be done in the SPS by using non-fully stripped ions
Pb53+ from the PS at 26 GeV/c/charge. The calibration will
be done by precisely measuring the revolution frequency of the ion beam.
It is worth noting that the ion beam crossing PS transition energy for
this purpose does not experience any loss.
- PS high intensity studies : single bunches of 6.5 12
protons can now be accepted by the PS with minimal losses on a horizontal
working point Qx=6.2, contrary to the former working point 6.1, which
seriously limited the PS intensity due to space charge effects.
- Adiabatic capturing in the transverse phase plane : this is a
"grande première" in the PS where for the first time
beam could be captured in stable islands generated by non-linear resonances
(sextupoles and octupoles). This process potentially replaces the present
continuous transfer scheme to the SPS by a more proper process with virtually
no losses. However, much is still to be done and it remains to be seen
whether the present continuous transfer scheme with its ageing equipment
could be replaced by this novel one until the CNGS start-up in 2006.
- HARP : this East Hall experiment, measuring the production of
pions as a function of the proton beam energy and target properties, has
successfully finished data taking and expresses warm thanks to the PS
For all this, J.P. Delahaye congratulated all people involved for these
3. Summary of the INTC
J.P. Riunaud presented a summary
of the nTOF part of the INTC meeting of 23.9.2002, covering the report by
the nTOF Technical and Scientific Co-ordinators and the responsibilities
within the nTOF collaboration,
and the AB/ATB group which will be responsible for nTOF, ISOLDE
front-end and RILIS technical matters.
This was followed later on by a presentation
by M. Lindroos on the ISOLDE
part of the INTC meeting where congratulations were given to the PS Division
for the successful push-pull mode operation between the GPS and HRS spectrometers.
Progress, technical developments and major problems were reported, as well
as results from a recently installed emittance measurement device and construction
of the prototype ECR source Monoecris 1 developed in collaboration with
GANIL. The REX-ISOLDE
position document, proposing how A&B Division would gradually take over
the exploitation of this radioactive ion accelerator will be discussed at
the next SPC in December.
The committee is concerned about the restricted budget available for ISOLDE
target production which may reduce the number of available shifts.
4. Summary of the AC Board
An AC Board was held on 24.9.2002 and J.P. Delahaye outlined the main points
- Organization of AC Unit : the functional
and administrative organization charts of the AC Unit were shown.
Following a request from the Director of Accelerators, S. Maury has left
PS to join the AC unit where he is head of the service responsible for
personnel, cost & schedule, space, technical support for local affairs
and multimedia documents. On behalf of the division, J.P. Delahaye extended
his congratulations to S. Maury and thanked him for his numerous successes
during the many years spent in PS.
and PIL : following the departure of S. Maury , T. Eriksson has agreed
to take over the responsibility for the AD and K. Schindl for PIL
which will be part of the A&B project of Ions for LHC which will also
be led by him. J.P. Delahaye thanked both of them for accepting these
important responsibilities and challenges.
- Additional ten posts : information was asked for regarding the
ten posts for the Accelerator Sector which were decided upon in April
2002, but for which resources are no longer available. Negotiations are
underway for some of these posts.
- Common control room: discussions are still going on with the
Swiss Authorities regarding the wooden
sphere from Expo.02
and C. Wyss hopes for a decision by the end of this year. An article
on this subject appeared in the Tribune de Genève last week. It
is very important to have a decision soon in order to able to use 2005,
when the machines are stopped, to switch over to the new control room.
In addition, arrangements for the relocation of people on the Prévessin
and Meyrin sites have been delayed so far whilst awaiting a decision on
the control room.
5. Status of Staff Plan and meeting of AB Group Leaders with the DG
J. Boillot showed the A&B staff plan, in groups of PPA codes, which
was presented at the ABMB last week with the requested FTE's from Group
Leaders. Some further smoothing out has had to be done, in order to make
a realistic staff recruitment request at the "Morges" meeting,
which S. Myers and J.P. Delahaye will do their best to defend. Following
the Morges meeting each group will be informed of their resources for each
activity and the consequences on lower priority jobs will have to be analyzed.
6. Summary of meetings LHCTB
(3.09.2002) and LHC
Due to lack of time, it was not possible to give this summary at the meeting.
A copy is, however, attached
and main points listed below.
- Injector status: the PS complex delivers a quasi-operational
proton beam with LHC nominal characteristics. The SPS has made big progress
recently on the electron cloud issue via "beam scrubbing" (10
days of nominal LHC beam in the SPS), with a concomitant pressure reduction
of 4 orders of magnitude. Moreover, the extensive "impedance reduction
programme" done over the past years fully meets expectations. As
a result, the SPS has obtained, for the first time, an LHC-type beam of
288 bunches with nominal 1.1 1011 p/bunch at 400 GeV, with
however somewhat larger transverse emittances.
- LHC main magnets: out of the 14 dipoles tested so far, 13 reached
8.33 T (nominal field), 11 attained 9T. The first series quadrupole reached
a gradient of 238 T/m (nominal 223 T/m).
- Insolvencies and consequences, corrective measures: Several firms
heavily involved in LHC construction became insolvent recently, in particular
Babcock-Borsig with the daughter NOELL. While the pre-series dipole contract
with NOELL continues normally, CERN will have to re-negotiate the contract
for the series production. Every effort is employed by CERN to avoid cost
increase and additional delays caused by these events.
- Staff redeployment: under the Internal Mobility scheme, so far
16 staff have migrated to LHC Division, in particular 10 joining the Superconducting
Magnet (MMS) group "which is now adequately staffed".
- Coloured beams? : looking at LHC from the top, Beam 1 (rotating
clockwise) is defined as "blue", while Beam 2 (anticlockwise)
7. Future meetings
- ABMB on 21.10.2002
- PSMB on 28.10.2002
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15 October, 2002