MOOAM1R1
CERN, Meyrin, Switzerland
CERN, Geneva, Switzerland
THDMR1
CERN, Meyrin, Switzerland
CERN, Meyrin, Switzerland
CERN, Meyrin, Switzerland
CERN, Meyrin, Switzerland
| Paper | Title | Page |
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MOOAM1R1 |
Opening Adddress | |
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| Welcome to COOL23 | ||
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Slides MOOAM1R1 [0.969 MB] | |
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| MOPPM1R3 | Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD) | 5 |
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| A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. to Davide’s IPAC23], recalled in this paper, favour high reliability, with improved performance in terms of time of cooling, obtained mainly with better field quality and possibly higher electron beam current. The status of the new electron cooler design is presented, showing an evolution that aims at easing integration, installation and maintenance. | ||
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Slides MOPPM1R3 [10.544 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-COOL2023-MOPPM1R3 | |
| About • | Received ※ 24 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 20 November 2023 — Issued ※ 02 December 2023 | |
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THDMR1 |
Dieter Möhl Awards 2023 | |
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| Awarded since 2013 (COOL13 in Mürren) It is awarded in memory of Dieter Möhl, a pioneer in the field of particle beam cooling who passed away very suddenly in 2012. | ||
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Slides THDMR1 [0.854 MB] | |
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| THPOSRP06 | A Test Bench for Characterizing Electron Cooler Components at up to -80 kVDC | 61 |
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| During the upcoming Long Shutdown 3 (LS3), the electron cooler of CERN’s Antiproton Decelerator (AD) will be replaced by a new electron cooler. The present electron cooler operates at the maximum energy of about 27keV. However, the new device will have electron collector and electron gun with the possibility of operating at up to 68keV electron energy. To characterize the gun and the collector at this higher energy, a test bench has been built and put in operation. The test bench is equipped with a 1.5 m drift solenoid operating with a maximum magnetic field of 1000 Gauss, and a faraday cage with a high voltage platform that can be biased up to - 80 kV DC. The first element of the new AD electron cooler, the electron collector, is presently being tested on the test bench. In this poster we describe in detail the main elements of the test stand, give some highlights of the ongoing tests with the new collector and present future plans. | ||
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Poster THPOSRP06 [11.398 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP06 | |
| About • | Received ※ 01 February 2024 — Revised ※ 03 February 2024 — Accepted ※ 03 February 2024 — Issued ※ 05 March 2024 | |
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| THPOSRP09 | H0 Diagnostics for the ELENA Electron Cooler | 68 |
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| In addition to antiprotons, the ELENA ring at CERN can also inject protons and H⁻ ions from a dedicated ion source located close to the ring. These particles offer the possibility for extra diagnostics for detailed investigations into the cooling process at the very low energy of the ELENA ring. To this effect a monitor was installed downstream of the electron cooler to measure the recombination of protons with the cooling electrons. Although protons have never been used in ELENA, H⁻ ions are routinely used to setup and optimise the ring. The installed device is now used to monitor the stripping of the H⁻ ions on the residual gas and in the presence of electrons generated by the cooler, providing some insight on the evolution of the beam size during the deceleration cycle and the performance of the electron cooler on the two cooling plateaus. | ||
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Poster THPOSRP09 [2.914 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP09 | |
| About • | Received ※ 28 September 2023 — Revised ※ 31 October 2023 — Accepted ※ 21 November 2023 — Issued ※ 02 December 2023 | |
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| THPOSRP10 | Development of a Field Emission Electron Gun for Low Energy Electron Cooling | 72 |
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| The use of carbon nanotubes (CNT) as a cold electron source for a low energy electron cooler has been studied in detail. To fully characterise different CNT arrays (conditioning process, emitted current, lifetime) and to investigate the optimum electrical configuration of the source to be used in an electron gun, a cold cathode test bench (CCTB) has been set up. From the measurements performed on the CCTB, an electron gun has been designed, constructed and is being tested to measure the properties of an electron gun using a larger (4cm diameter) CNT array as the source. The CCTB has been modified to incorporate a beam transport system as well as the relevant diagnostics needed to perform the experiments. The results will be compared to the CST Particle Studio simulations and will be used to optimise the design for use in the ELENA low energy electron cooler. | ||
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Poster THPOSRP10 [5.893 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-COOL2023-THPOSRP10 | |
| About • | Received ※ 20 October 2023 — Accepted ※ 21 November 2023 — Issued ※ 02 December 2023 | |
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