Project

General

Profile

Update 10 March 2017

RLSR/MPB: Flip mode Operation: CM48
Added by Kyberd, Paul 2 months ago

This week has been eventful for MICE. On Tuesday, operations in flip mode with the lithium-hydride absorber ended, the work to install the liquid-hydrogen absorber started and the review of the experiment by the Resource Loaded Schedule Review panel and the MICE Project Board took place. The following is a brief summary of the outcome of the review, an update on the flip-mode data taking and the preparations for the LH2-system install and the announcement of the date of CM48 in Belgrade.

RLSR/MPB review:

The RLSR panel and the MPB met at RAL on the 7th and 8th of March 2017. The papers prepared for the review as well as the presentations may be found on MICEmine at:

http://micewww.pp.rl.ac.uk/projects/governance/wiki/2017-03-07-Review

The talks were well prepared, well delivered and well received. I would like to thank all the speakers and all those who contributed to the preparation of the documentation that, together, convey so well the excellent progress that has been made by the hard work of the collaboration.

In their feedback at the close-out, the reviewers congratulated the collaboration on delivering “… useful and important scientific data”, noted the outstanding commitment of the MICE personnel and welcomed the fact that the collaboration continues to attract new institutes.

There were only a few actions and recommendations. The reviewers recommended “…very strong[ly] and unanimous[ly] …” that the collaboration be allowed to take data in the September/October ISIS User Cycle (2017/02). In addition, the feedback included the recommendation that we maximise the scientific output of the experiment by writing “… as many peer-reviewed publications as possible”. The reviewers recommended that we extend our series of technical publications to include contributions on the superconducting magnets, the RF system and the overall MICE experiment.

The terms of reference for the review did not include the mandate for the reviewers to comment on our proposal to upgrade Step IV to deliver a cooling demonstration with acceleration. However, the reviewers commented that “… the scientific benefits [of such an upgrade] would be significant …”. The first step in bringing the proposed upgrade forward is the submission of a “Statement of Intent” (SOI) to STFC by MICE-UK. Paul Soler has begun to prepare the SOI based on the material presented at CM47 and presented at the review.

Flip-mode operation with LiH:

Data was taken in flip-mode with LiH during the first three weeks of the present ISIS User Cycle (2016/05). The FC had been run up to 165A on its own on the beam-line. It was therefore a disappointment that it quenched at 160A when run up in the presence of the spectrometer solenoids. Despite this set back, the principal factor that limited our ability to take data was ISIS, which suffered from a number of failures that resulted in the loss of approximately one of the three weeks of data taking.

When data-taking ended on Tuesday morning this week, we had taken two of the three lattice settings that had been planned for the flip-mode data-taking period. Paolo Franchini and Melissa Uchida, who were the MOMs for this Cycle, did an excellent job of ensuring that the MICE up-time was excellent when ISIS was in operation. Initial studies indicate that the data quality is good.

Liquid-hydrogen absorber installation and commissioning programme:
The MICE Hall and the liquid-hydrogen teams moved efficiently to begin preparations for the installation of the liquid-hydrogen absorber as soon as data taking ended. The status is that the PRY has been partially disassembled, the FC has been withdrawn, the LiH absorber placed into safe storage and the spectrometer solenoids have been moved to their nominal positions. This will aid the reinstallation of the FC.

The schedule for the liquid-hydrogen system install is tight. Vicky Bayliss and the LH2-team have carefully planned the installation and commissioning programme—including the necessary safety sign-off. So far the programme remains on track,

CM48: Belgrade 27–29 June 2017

At CM47 we decided that the next collaboration meeting will be held in Belgrade. It is a pleasure to confirm that the meeting will take place between the 27th and 29th June 2017. Further details will be circulated in due course.

With best wishes …

Ken


Comments