Minutes of the 33rd MT Committee Meeting
Date and time:

May 18, 2010; 13:30–15:00

Place:

Nishina Bldg., Room 201

Attendees: Sakai (Chair), Kamigaito, Ueno, Uwamino, Kase, Kubono (CNS), Shimoura (CNS), Kambara,Kubo, Fukunishi, Uesaka (UEC observer), Motobayashi (observer), En’yo (observer)
Absent: Sakurai, Wakasugi, Morita(no particular order)

Reports
1. Accelerator operation status reportzStatus of the 48Ca beam delivery to the ongoing BigRIPS experiment was reported

2. Call for Beam-time scheduling requests for BigRIPS-based experimentszIn compliance with the decision made by the directors of the RIKEN Nishina Center and Center for
Nuclear Study, University of Tokyo, the beam-time scheduling requests are being accepted only forthe following BigRIPS-based experiments which will be ready to run this autumn, from thebeginning of October to the middle of December, 2010 (deadline is June 6)¾BigRIPS / ZeroDegree / SHARAQ experiments with E/A=250 MeV primary beams (i.e.,AVF injection) of around three weeks duration in October¾BigRIPS / ZeroDegree experiments with E/A=350 MeV 48Ca primary beams of around 5.5
weeks duration in November and Decemberz Important dates after the deadline (June 6) including AVF/RILAC/RRC experiments are:¾

June 7-11:

Preparation of BT-plan based upon requests¾June 14-18:

Trimming and finalizing the plan

¾

July:

Call for BT scheduling requests for AVF/RILAC/RRC experiments¾

July-August:

Safety review and BT-plan making of AVF/RILAC/RRC experiments¾

September :Approval by the MT committeez The following tentative two-year plan has also been proposed to promote efficient beam-time
allocation for BigRIPS-based experiments.
¾

Autumn 2010:

250A MeV (AVF injection) beams, & 48Ca (current call)¾

Spring 2011:

124

Xe, & 250A MeV (AVF-injection) beams¾Autumn 201 :238

U & Xe¾

Spring 2012 :(open)

3. Preparation for PAC meetingsz

NP-PAC: Replacement of PAC members and the number of proposals received were reported.

z

ML-PAC：The call for proposals for RIBF is openz

PAC of the Sharing Advanced Facilities for Common Use (Common Use PAC): The second

to May 21.

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 32nd meeting were approved
2. Letter of Intent (LoI)z

Up to now, the LoI was not reviewed by the PAC, but at the upcoming NP-PAC, to be held June
14-15, the PAC will be asked to review the documents submitted this time.

3. Coming second half-year BT allocationz

Allocation procedures and other issues related to the Xe-beam commissioning with a new injector
RILAC-II were discussed.

4. Proposals using RIBF submitted to ML-PACz“Non-nuclear physics” proposals using the RIBF facility are reviewed in the ML-PAC, whose beamtime scheduling largely depends on RAL operation. It was pointed out that under this scheme, theapproved experiments by ML-PAC might be kept waiting for a half year or more before allocation
for the next BT-scheduling request call.

z

It is, however, not practical to set up a new PAC given the small number of non-nuclear proposals.
Also, the NP-PAC does not have the required specialists. Therefore it was decided to continue toreview RIBF non-nuclear proposals within the ML-PAC as in the past.

5. Backlog related with BigRIPS MTz

There was discussion of how to deal with the backlog experiments proposing to use primary beams
such as 78Kr or 76Ge, which are not scheduled in a short term by the institute initiative, replacing
priories on 124Xe- and 238U-beam developments.

z

It was decided to refer this issue to the MT committee chair, the NP-PAC chair, and the RNC deputy
director at the upcoming NP-PAC.

6. Next MT Committee meetingz

The next MT committee meeting will be held on Friday, June 18, 2010, at 13:30.

z

From July, the meeting will be held on every third Friday of the month.