Minutes of the 34th MT Committee Meeting
Date and time: June 18, 2010; 13:30–15:00
Place: Nishina Bldg., Room 201
Attendees: Sakai (Chair) , Fukunishi, Kambara, Kamigaito, Kase, Kubo, Kubono (CNS), Morita, Sakurai,
Shimoura (CNS), Ueno, Uwamino, Wakasugi, En’yo (observer), Henning (observer),Motobayashi (observer), Uesaka (UEC observer), Yoshida (observer)
Absent: none(no particular order)

Reports
1. Beam-time schedule changes
z The NP0802-RIBF57 (Lapoux et al.) BT (beam time) was extended for 2 days to compensate thelost days due to accelerator trouble. It has been decided that the following BTs from May 31 to July
14 are delayed for 1-2 days (The AVF single-use BTs are not delayed).

2. Report on the status of beam accelerationz

The 48Ca beam was delivered from May 14 to June 11. The intensity was initially less than 50 pnA(May 14-19), but gradually increased (May 21-24). It was then finally well controlled at 170-200
pnA (May 25-June 11).

z

The 18O beam was extracted from SRC at the maximum intensity 1000 pnA (June 11).

3. Machine Study requestsz

Two machine studies were approved: i) a test for a new stripper system with a 238U beam and ii)
SHARAQ commissioning for the study of dispersion matching

4. Status of the PAC meetingsz

7th NP-PAC: was held on June 14-15. The PAC report will be sent to RNC & CNS directors soon.

z

6th ML-PAC：7 proposals have been submitted: 3 for RRC (21 days) and 4 for RILAC (37 days). The
documentary review is in progress.

z

2nd PAC of the Sharing Advanced Facilities for Common Use (Common Use PAC): The second
Common Use PAC will be held on Wednesday, June 30, 2010, at 14:00. Proposals can be submitted
at any time.

Discussions
1. The minutes of the 33rd meeting were approved.
2. Coming second half-year BT allocation of BigRIPS-based experimentsz

A plan for the beam-time allocation of BigRIPS-based experiments with i) AVF-injected 14N and 2Hbeams on Sep/27 - Oct/22 and ii) a 48Ca beam on Oct/26 – Dec/14 was approved.

z

The dates of experimental run were 17 and 33(+3) days for the 14N & 2H and 48Ca beams,respectively.

z

In order to allocate BTs as much as possible, the spare time is not reserved. Therefore it would bevery difficult to accept/consider an extension or modification of this scheduling (Detailedcoordination/arrangement should be made by Dr. Uesaka for 14N and 2H beams and by Dr. Sakurai
for 48Ca beam.).
z

It is scheduled such that there is no break for the ion-source cleaning in the series of this 48Ca runs.

z

The Accelerator group requests not to allocate AVF beam times on Nov-Dec because of the limited
time for the RILAC-II construction. The decision will be made at the next MT committee.

3. Z=113 BT allocationz

The RNC director on his initiative requested to allocate the SHE experiment in this fall and winter aslong as possible if this does not make a sacrifice to other experiments.

z

The Z=113 experiment (RILAC-I GARIS) is being scheduled to start from Sep 4. Detailed schedule
will be determined soon.

4. Next MT Committee Meetingz

The next MT committee meeting will be held on Friday, July 16, 2010, at 13:30-15:00 (The meeting
will be held on every third Friday of the month).