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160 MeV H$^−$ beam will be delivered from the new CERN linear accelerator (Linac4) to the Proton Synchrotron Booster (PSB), using a H$^−$ charge-exchange injection system. A $200 \mu \rm{g/cm}^2$ carbon stripping foil will convert H$^−$ into protons by stripping off the electrons. The H$^−$ charge-exchange injection principle will be used for the first time in the CERN accelerator complex and involves many challenges. In order to gain experience with the foil changing mechanism and the very fragile foils, in 2016, prior to the installation in the PSB, a stripping foil test stand has been installed in the Linac4 transfer line. In addition, parts of the future PSB injection equipment are also temporarily installed in the Linac4 transfer line for tests with a 160 MeV H$^−$ commissioning proton beam. This paper describes the foil changing mechanism and control system, summarizes the practical experience of gluing and handling these foils and reports on the first results with beam.

An increase of beam intensity and brightness is essential for future upgrades of existing CERN proton accelerator facilities. A first step can be an injection of H− ions from a new higher energy H− linear accelerator called Linac4 into the Proton Synchrotron Booster (PSB). A second step could be the complete replacement of the PSB by a high‐power linear accelerator, called SPL, injecting directly into the Proton Synchrotron (PS). Both injection scenarios require a high performance, high reliability negative hydrogen ion source. This paper will present the challenging source requirements and the two approaches to fulfill them.

Since the move of ISOLDE from CERN’s synchrocyclotron (SC) to the Proton Synchrotron Booster (PSB) in 1992 extensive work has been devoted to the development of new beams, i.e. the production of new isotopes, beams of higher intensity and the ionization of further elements. Most of these developments were driven by the particular needs of the physics community proposing new experiments. The main achievements were the adaption of liquid metal targets to the pulsed proton beam to prevent shockwaves and splashing inside the target container and systematic studies on the time structure of the release of the isotopes from the target. Furthermore the work on laser ion-sources already started at ISOLDE-2 was continued, the so-called RIST target was developed, and most recently first tests on the isotope production while increasing the proton energy from 1 GeV to 1.4 GeV were done. The latter topics are discussed in this paper.

This paper reports results of using High‐Frequency Structure Simulator (HFSS) to design a Smythe‐type broadband longitudinal HOM damper for the SSCL low energy booster (LEB) ferrite‐tuned cavity. The code is also used to check the effect of arranging resistive loads in an azimuthally asymmetric pattern to damp transverse modes.

Eddy currents are developed in the tuner of the Superconducting Super Collider Low Energy Booster (LEB) cavity during the LEB frequency sweep. The two main difficulties created by the eddy currents are excessive tuner‐surface heating, and more important, a reduction in the time response of the tuner. We present a detailed analysis of the eddy currents for various tuner designs. The analysis has been done using 2D and 3D time‐domain finite element codes (PE2D by Vector‐Field and EMAS by MSC). Non‐linear analysis was performed utilizing B‐H curves. The codes have been benchmarked analytically and by using measured data for different slotted pillbox structures.

Progress in the use of one‐turn maps for long‐term tracking of particles—useful in dynamic aperture studies on large circular accelerators—is reviewed briefly. It is recommended that long‐term tracking of particles for large circular accelerators such as the Superconducting Super Collider (SSC) or its high‐energy booster be performed with one‐turn maps. The advantages are twofold: not only is tracking speed dramatically enhanced (by about two orders of magnitude for the SSC), but one‐turn‐map tracking also offers an easier reliability check of the tracking results and easier order‐by‐order analysis.

The presentation on ion profile monitors using microchannel plates consists of two principal parts. The first part describes the design and performance of a profile monitor that was installed in the Debuncher Ring of the Antiproton Source at Fermilab. The information presented relies to a large extent on the contents of a previously published article describing that project [1]. The second part of the presentation describes work in progress on a turn‐by‐turn profile monitor for the Fermilab Booster. A written description of that work is included elsewhere in these proceedings [2].