Activities related to inflammatory bowel disease management during and after the coronavirus disease 2019 lockdown in Italy: How to maintain standards of care

Background and aims:Restructuring activities have been necessary during the lockdown phase of the coronavirusdisease 2019 (COVID-19) pandemic. Few data are available on the post-lockdown phase in terms of health-careprocedures in inflammatory bowel disease (IBD) care, and no data are available specifically from IBD units. Weaimed to investigate how IBD management was restructured during the lockdown phase, the impact of therestructuring on standards of care and how Italian IBD units have managed post-lockdown activities.Methods:A web-based online survey was conducted in two phases (April and June 2020) among the Italian Groupfor IBD affiliated units within the entire country. We investigated preventive measures, the possibility of continuingscheduled visits/procedures/therapies because of COVID-19 and how units resumed activities in the post-lockdownphase.Results:Forty-two referral centres participated from all over Italy. During the COVID-19 lockdown, 36% of first visitsand 7% of follow-up visits were regularly done, while>70% of follow-up scheduled visits and 5% of first visits weredone virtually. About 25% of scheduled endoscopies and bowel ultrasound scans were done. More than 80% ofbiological therapies were done as scheduled. Compared to the pre-lockdown situation, 95% of centres modifiedmanagement of outpatient activity, 93% of endoscopies, 59% of gastrointestinal ultrasounds and 33% of biologicaltherapies. Resumption of activities after the lockdown phase may take three to six months to normalize. Virtualclinics, implementation of IBD pathways and facilities seem to be the main factors to improve care in the future.Conclusion:Italian IBD unit restructuring allowed quality standards of care during the COVID-19 pandemic to bemaintained. A return to normal appears to be feasible and achievable relatively quickly. Some approaches, suchas virtual clinics and identified IBD pathways, represent a valid starting point to improve IBD care in the post-COVID-19 er

A Cylindrical GEM Inner Tracker for the BESIII experiment at IHEP

The Beijing Electron Spectrometer III (BESIII) is a multipurpose detector that collects data provided by the collision in the Beijing Electron Positron Collider II (BEPCII), hosted at the Institute of High Energy Physics of Beijing. Since the beginning of its operation, BESIII has collected the world largest sample of J/{\psi} and {\psi}(2s). Due to the increase of the luminosity up to its nominal value of 10^33 cm-2 s-1 and aging effect, the MDC decreases its efficiency in the first layers up to 35% with respect to the value in 2014. Since BESIII has to take data up to 2022 with the chance to continue up to 2027, the Italian collaboration proposed to replace the inner part of the MDC with three independent layers of Cylindrical triple-GEM (CGEM). The CGEM-IT project will deploy several new features and innovation with respect the other current GEM based detector: the {\mu}TPC and analog readout, with time and charge measurements will allow to reach the 130 {\mu}m spatial resolution in 1 T magnetic field requested by the BESIII collaboration. In this proceeding, an update of the status of the project will be presented, with a particular focus on the results with planar and cylindrical prototypes with test beams data. These results are beyond the state of the art for GEM technology in magnetic field

Effet de l'anémie aiguë sur la consommation d'oxygène après traumatisme majeur

none45siPerformance of triple GEM prototypes has been evaluated by means of a muon beam at the H4 line of the SPS test area at CERN. The data from two planar prototypes have been reconstructed and analyzed offline with two clusterization methods: the center of gravity of the charge distribution and the micro Time Projection Chamber (mu TPC). GEM prototype performance evaluation, performed with the analysis of data from a TB, showed that two-dimensional cluster efficiency is above 95% for a wide range of operational settings. Concerning the spatial resolution, the charge centroid cluster reconstruction performs extremely well with no magnetic field: the resolution is well below 100 mu m. Increasing the magnetic field intensity, the resolution degrades almost linearly as effect of the Lorentz force that displaces, broadens and asymmetrizes the electron avalanche. Tuning the electric fields of the GEM prototype we could achieve the unprecedented spatial resolution of 190 mu m at 1 Tesla. In order to boost the spatial resolution with strong magnetic field and inclined tracks a mu TPC cluster reconstruction has been investigated. Such a readout mode exploits the good time resolution of the GEM detector and electronics to reconstruct the trajectory of the particle inside the conversion gap. Beside the improvement of the spatial resolution, information on the track angle can be also extracted. The new clustering algorithm has been tested with diagonal tracks with no magnetic field showing a resolution between 100 mu m and 150 mu m for the incident angle ranging from 10 degrees to 45 degrees. Studies show similar performance with 1 Tesla magnetic field. This is the first use of a mu TPC readout with a triple GEM detector in magnetic field. This study has shown that a combined readout is capable to guarantee stable performance over a broad spectrum of particle momenta and incident angles, up to a 1 Tesla magnetic field.noneAlexeev, M.; Amoroso, A.; Bianchi, F.; Bertani, M.; Bettoni, D.; Canale, N.; Calcaterra, A.; Carassiti, V.; Cerioni, S.; Chai, J.; Chiozzi, S.; Cibinetto, G.; Cotta Ramusino, A.; Cossio, F.; De Mori, F.; Destefanis, M.; Edisher, T.; Evangelisti, F.; Farinelli, R.; Fava, L.; Felici, G.; Fioravanti, E.; Garzia, I.; Gatta, M.; Greco, M.; Jing, D.; Lavezzi, L.; Leng, C.; Li, H.; Maggiora, M.; Malaguti, R.; Marcello, S.; Melchiorri, M.; Mezzadri, G.; Morello, G.; Patteri, P.; Pellegrino, J.; Rivetti, A.; Rolo, M.D.; Saviré, M.; Scodeggio, M.; Soldani, E.; Sosio, S.; Spataro, S.; Yang, L.Alexeev, M.; Amoroso, A.; Bianchi, F.; Bertani, M.; Bettoni, D.; Canale, N.; Calcaterra, A.; Carassiti, V.; Cerioni, S.; Chai, J.; Chiozzi, S.; Cibinetto, G.; Cotta Ramusino, A.; Cossio, F.; De Mori, F.; Destefanis, M.; Edisher, T.; Evangelisti, F.; Farinelli, R.; Fava, L.; Felici, G.; Fioravanti, E.; Garzia, I.; Gatta, M.; Greco, M.; Jing, D.; Lavezzi, L.; Leng, C.; Li, H.; Maggiora, M.; Malaguti, R.; Marcello, S.; Melchiorri, M.; Mezzadri, G.; Morello, G.; Patteri, P.; Pellegrino, J.; Rivetti, A.; Rolo, M. D.; Saviré, M.; Scodeggio, M.; Soldani, E.; Sosio, S.; Spataro, S.; Yang, L

Test beam results with prototypes for the new Cylindrical GEM Inner Tracker of the BESIII experiment

A cylindrical GEM tracker is under construction in order to replace and improve the inner tracking system of the BESIII experiment. Tests with planar chamber prototypes were carried out on the H4 beam line of SPS (CERN) with muons of 150 GeV/c momentum, to evaluate the efficiency and resolution under different working conditions. The obtained efficiency was in the 96 - 98% range. Two complementary algorithms for the position determination were developed: the charge centroid and the micro-TPC methods. With the former, resolutions <100 micron and <200 micron were achieved without and with magnetic field, respectively. The micro-TPC improved these results. By the end of 2016, the first cylindrical prototype was tested on the same beam line. It showed optimal stability under different settings. The comparison of its performance with respect to the planar chambers is ongoing. Here, the results of the planar prototype tests will be addressed

The new cylindrical GEM inner tracker of BESIII

The Cylindrical GEM-Inner Tracker (CGEM-IT) is the upgrade of the internal tracking system of the BESIII experiment. It consists of three layers of cylindrically-shaped triple GEMs, with important innovations with respect to the existing GEM detectors, in order to achieve the best performance with the lowest material budget. It will be the first cylindrical GEM running with analog readout inside a 1T magnetic field. The simultaneous measurement of both the deposited charge and the signal time will permit to use a combination of two algorithms to evaluate the spatial position of the charged tracks inside the CGEM-IT: the charge centroid and the micro time projection chamber modes. They are complementary and can cope with the asymmetry of the electron avalanche when running in magnetic field and with non-orthogonal incident tracks. To evaluate the behaviour under different working settings, both planar chambers and the first cylindrical prototype have been tested during various test beams at CERN with 150 GeV/c muons and pions. This paper reports the results obtained with the two reconstruction methods and a comparison between the planar and cylindrical chambers.The Cylindrical GEM-Inner Tracker (CGEM-IT) is the upgrade of the internal tracking system of the BESIII experiment. It consists of three layers of cylindrically-shaped triple GEMs, with important innovations with respect to the existing GEM detectors, in order to achieve the best performance with the lowest material budget. It will be the first cylindrical GEM running with analog readout inside a 1T magnetic field. The simultaneous measurement of both the deposited charge and the signal time will permit to use a combination of two algorithms to evaluate the spatial position of the charged tracks inside the CGEM-IT: the charge centroid and the micro time projection chamber modes. They are complementary and can cope with the asymmetry of the electron avalanche when running in magnetic field and with non-orthogonal incident tracks. To evaluate the behavior under different working settings, both planar chambers and the first cylindrical prototype have been tested during various test beams at CERN with 150 GeV/c muons and pions. This paper reports the results obtained with the two reconstruction methods and a comparison between the planar and cylindrical chambers