Новосибирский государственный университет
Лаборатория по исследованию физических процессов при столкновениях адронов сверх-высоких энергий
Сотрудники лаборатории участвует в эксперименте АТЛАС на Большом Адронном Коллайдере (БАК) Европейского Центра по физике высоких энергий (ЦЕРНа) с 1995 г., то есть почти с момента возникновения коллаборации. Набор данных при рекордных энергиях столкновений протонов (8 тера-электрон-вольт (ТэВ) в системе центра масс в сезоне 2012 г., в 2015 г. планируется достичь 13 ТэВ) начался в 2010 г. С этого времени эксперименты, ведущиеся на БАК, стали основным источником новой информации по физике высоких энергий, особенно в том, что касается поиска «новой физики» за пределами Стандартной Модели. Спектр деятельности сотрудников лаборатории охватывает несколько направлений.
Это участие в анализе физических процессов, в частности в группе по поиску и изучению свойств хиггсовского бозона (открытого коллаборациями АТЛАС и CMS в 2012 г.) в канале распада на четыре лептона, а также поиск правополяризованных векторных бозонов и тяжелых нейтрино в группе по поиску так называемой «экзотической физики». Наши сотрудники участвуют в работе групп, занимающихся калибровкой детектора по физическим процессам и настройкой реконструкции частиц в детекторе.
Также ведутся работы по поддержке детектора и развитию программного обеспечения:
- контроль качества физических данных (в том числе в режиме он-лайн при наборе статистики) и данных электронных калибровок систем детектора,
- моделирование электромагнитного калориметра на жидком аргоне (электродная структура которого имеет очень сложную форму, напоминающую аккордеон) в программе GEANT4,
- мониторинг системы распределенной обработки и хранения данных ГРИД (это тысячи задач, одновременно и круглосуточно выполняющихся на мощных вычислительных кластерах, распределенных по всему миру; объем данных составляет десятки петабайт),
- поддержка и развитие системы сбора данных и триггера,
- системное администрирование центральных компьютеров АТЛАС, поддержка многочисленных сервисов и баз данных
Планируется, что светимость БАК (число столкновений протонов на единицу площади в единицу времени) будет повышена с нынешнего уровня 7∙10^33 см-2с-1 до 2∙10^34 см-2с-1 в 2019 г. и до 5∙10^34 см-2с-1 в 2024 г. Значительно возросший интеграл статистики должен сделать возможными более точные измерения, как для «стандартной», так и для «новой» физики. Наши сотрудники участвуют в работах по подготовке будущих апгрейдов систем детектора АТЛАС – в эксперименте по исследованию работоспособности жидкоаргоновых калориметров при высоких загрузках и в разработке новой электроники для цифровой обработки сигналов триггера электромагнитного калориметра.
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Сотрудники:
- Анисёнков Алексей Владимирович, научный сотрудник
- Барц Евгений Олегович, лаборант
- Бобровников Виктор Сергеевич, научный сотрудник
- Бузыкаев Алексей Рафаилович, научный сотрудник
- Купич Андрей Сергеевич, младший научный сотрудник
- Масленников Алексей Леонидович, старший научный сотрудник
- Мельникова Наталья Александровна, инженер
- Подберёзко Павел Сергеевич, инженер
- Резанова Ольга Леонардовна, научный сотрудник
- Сухарев Андрей Михайлович, научный сотрудник
- Талышев Алексей Александрович, научный сотрудник