IPAC - Individual Peer Assessment of Contribution to group work

Universities and professional bodies recognize the educational benefits of getting students to work in groups in several projects across their degrees. However, staff and students have concerns about the fairness of the traditional assessment, when all members of the team get the same mark. In particular, this leads to poor student experience and numerous complaints of ‘free ridders’, significantly affecting the NSS scores. The IPAC Consortium was formed to look into the use of Individual Peer Assessment of Contribution (IPAC) to group work. We present the different areas in which we have been working, e.g. from the basics of the methodology to the various specifics during implementation, literature review, collection of staff and student perception at UCL, review of software/platforms to run the method, tests and case studies within UCL, guidelines, development of a customizable and easy tool to run IPAC, etc. We will also consult the audience for additional priority areas that we should explore and invite them to the Consortium

Using IPAC across disciplines and methodologies- what are the typical marks given by students to peers?

The IPAC methodology allows academics to give an individual mark to students that participated in a group work activity, and this is based on their contributions as seen by their peers. Different formulas are used to combine the “group mark” and the “IPAC value” into the “individual marks”, and the selection is mostly driven by how confident and comfortable the academic staff is giving “power” to the students to influence the final marks. In reality, any scepticism or lack of confidence comes from not knowing how students typically rate their peers. This paper provides insightful information by reporting significant statistical analysis on a large data set of the typical IPAC marks given by the students in several group activities run in 2017/18 across UCL, and what might influence these marks, e.g. the specific method used for IPAC, how it was implemented, the class experience, etc. This is of interest to present and future users of the IPAC methodology

Individual peer assessment of contribution to group work: methodology, results and insights [Presentations and round table]

Round table where the IPAC topic was discussed and 9 abstracts from IPAC Consortium members were presented. 90 mins sessio

Home-made and readily available IPAC tool – Run your practice your way and efficiently

The concept of the IPAC methodology is simple, however its implementation without a tool is very staff-time consuming (e.g. 3-4 full working days for an 80 students class) and hence not always used even if beneficial. Therefore an automatic IPAC system is needed. This system should comply with some priority requirements that I identified from extensive literature reading, own experience and numerous conversations with other staff members. There are some relevant commercial systems available (reviewed by the IPAC Consortium), but currently none meet all these priority requirements. This drove me to develop an in-house software. This is currently available, in use by some UCL academics in various Faculties since October 2017, and readily available to others. This software is useful to any academic/teacher setting and assessing group work. I will present the priority requirements and give a demonstration of the software. Feedback / future development priorities will be sought from the audience

First Nations, Inuit, Métis Health Core Competencies: A Curriculum Framework for Undergraduate Medical Education

The intent of these core competencies is to provide undergraduate medical educators with broad thematic domains around First Nations, Inuit, Métis (FN/I/M) health knowledge, skills and attitudes to engage in both patient and community-centered approaches to health care delivery with and for FN/I/M peoples

Expected and measured behaviour of the tune in the LHC operation at 3.5 TeV

The tune of the Large Hadron Collider (LHC) mainly depends on the strength of the quadrupole magnets. It is also affected by the b2 component in the main dipoles. In case of systematic misalignments, the b3 component due to the main dipoles and the sextupolar correctors also affect the tune due to the feed down effect. The magnetic model of the machine, based on a fit of magnetic measurements, has an intrinsic precision which can be estimated in a few units (one part over 10000). During the first years of operation of the LHC, the tune has been routinely measured and corrected through a feedback system. In this paper, we reconstruct from the beam measurements and the settings of the feedback loop, the evolution of the tune during injection and ramp. This gives the obtained precision of the magnetic model of the machine with respect to quadrupolar and sextupolar components. At the injection plateau there is an unexpected large decay whose origin is not understood: we present the data, with the time constants and the dependence on the previous cycles. Dedicated experiments aimed at excluding that this decay comes from a decay of the main dipole component were done. During the ramp the tune drifts by about 0.05: this precision is related to the precision in tracking the quadrupolar field in the machine.peer-reviewe

Modeling and simulation of LHC beam-based collimator setup

In the 2011 Large Hadron Collider run, collimators were aligned for proton and heavy ion beams using a semiautomatic setup algorithm. The algorithm provided a reduction in the beam time required for setup, an elimination of beam dumps during setup and better reproducibility with respect to manual alignment. A collimator setup simulator was developed based on a Gaussian model of the beam distribution as well as a parametric model of the beam losses. A time-varying beam loss signal can be simulated for a given collimator movement into the beam. The simulation results and comparison to measurement data obtained during collimator setups and dedicated fills for beam halo scraping are presented. The simulator will then be used to develop a fully automatic collimator alignment algorithm.peer-reviewe

Preliminary comparison of the response of LHC tertiary collimators to proton and ion beam impacts

The CERN Large Hadron Collider is designed to bring into collision protons as well as heavy ions. Accidents involving impacts on collimators can happen for both species. The interaction of lead ions with matter differs to that of protons, thus making this scenario a new interesting case to study as it can result in different damage aspects on the collimator. This paper will present a preliminary comparison of the response of collimators to proton and ion beam impacts.peer-reviewe

Preliminary thermo-mechanical analysis of angular beam impact on LHC collimators

The correct functioning of the LHC Collimation System is crucial to attain the desired LHC luminosity performance. However, the requirements to handle high intensity beams can be demanding. In this respect, accident scenarios must be well studied in order to assess their effect on the robustness of the collimators. One of the most probable accident scenarios identified is an asynchronous beam dump coupled with slight angular misalignment errors of the collimator installation at the beam-line. Previous work presented a preliminary thermal evaluation of the extent of beam-induced damage for such scenarios, where it was shown that in some cases, a tilt of the jaw could actually serve to mitigate the effect of an asynchronous dump on the collimators. This paper will further analyze the response of tertiary collimators in presence of such angular jaw alignments. Such work will also help to start identifying optimal operational conditions.peer-reviewe

Construction and bench testing of a prototype rotatable collimator for the LHC

A second generation prototype rotatable collimator has been fabricated at SLAC and delivered to CERN for further vacuum, metrology, function and impedance tests. The design features two cylindrical Glidcop jaws designed to each absorb 12 kW of beam in steady state and up to 60 kW in transitory beam loss with no damage and minimal thermal distortion [1]. The design is motivated by the use of a radiation resistant high Z low impedance readily available material. A vacuum rotation mechanism using the standard LHC collimation jaw positioning motor system allows each jaw to be rotated to present a new 2 cm high surface to the beam if the jaw surface were to be damaged by multiple full intensity beam bunch impacts in a asynchronous beam abort. Design modifications to improve on the first generation prototype, pre-delivery functional tests performed at SLAC and post-delivery test results at CERN are presented.ALBA-CELLS,American Physical Society Division of Physics of Beams (APS-DPB),Asian Committee for Future Accelerators (ACFA),ASTeC/STFC,Centro Fermi,et al.peer-reviewe