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The article presents the work of a multidisciplinary team of experts from various fields of medicine to optimize the «Questionnaire for assessing chronic pelvic pain and pelvic organ dysfunction (QCPPD) of the Ryzhikh National Medical Research Centre for Coloproctology» for use in clinical practice. The survey of respondents was conducted from June 28 to September 28, 2021. As a result of this survey, by repeatedly making edits and clarifications during communication with respondents, the final version was obtained, which allows assessing the patient's subjective sensations by the nature and localization of pelvic pain, sensitivity disorders and pelvic organ function. The main objective of this Questionnaire is to differentiate patients with neurogenic pain from a huge number of patients with chronic pelvic pain. This aspect will allow a more targeted approach to the diagnosis and pathogenetically justified treatment of patients, including after appropriate instrumental examinations. The work of a multidisciplinary team implies a higher degree of objectification and terminological accuracy of the Questionnaire under discussion. The presented version of the «Questionnaire for assessing chronic pelvic pain and pelvic organ dysfunction (QCPPD) of the Ryzhikh National Medical Research Centre for Coloproctology» will be primarily used in coloproctological patients with pelvic pain problems and anal incontinence and obstructive defecation. Further studies will be directed to the clinical evaluation of the results of the work carried out.В статье представлена работа мультидисциплинарной команды экспертов различных областей медицины по оптимизации «Опросника для оценки хронической тазовой боли и нарушений функции тазовых органов (ОХТБФ) НМИЦ колопроктологии им. А.Н. Рыжих» для использования в клинической практике. Опрос респондентов проводился с 28 июня по 28 сентября 2021 г. В результате данного опроса путем неоднократного внесения правок и уточнений в ходе общения с респондентами был получен конечный вариант, позволяющий проводить оценку субъективных ощущений пациента по характеру и локализации тазовой боли, нарушениям чувствительности и функции тазовых органов. Основной задачей данного Опросника является дифференцирование пациентов с нейрогенной болью из огромного числа больных с хронической тазовой болью. Данный аспект позволит более таргетно подходить к диагностике и патогенетически оправданному лечению пациентов, уже в том числе после проведения соответствующих инструментальных обследований. Работа мультидисциплинарной команды подразумевает более высокую степень объективизации и терминологическую точность обсуждаемого Опросника. Представленный вариант «Опросника для оценки хронической тазовой боли и нарушений функции тазовых органов (ОХТБФ) НМИЦ колопроктологии имени А.Н. Рыжих» будет прежде всего использоваться у пациентов колопроктологического профиля с проблемами тазовой боли и нарушением функции держания и эвакуации кишечного содержимого. Дальнейшие исследования будут направлены на клиническую оценку результатов проведенной работы.

A high-current electron-beam accelerator for pumping of a Xe2 lamp was developed. It is intended for injection of an electron beam into cylindrical gas cavity (diameter of 400 mm, length of 1600 mm, and the absolute pressure up to 3 bars). Two electron diodes in parallel are used in the accelerator. Each diode is connected to a linear transformer driver with vacuum insulation of a secondary turn. The next parameters of the accelerator have been obtained: diode voltage — 550–600 kV, diode current — 276–230 kA, current rise time — 160 ns, maximum power of the electron beam — 130 GW, pulse width on half maximum — 160 ns, electron beam energy at power level not less than half of maximum value — 20 kJ. The total energy of electrons, which pass through a 40 µm Ti foil into the Xe cell, is 8–9 kJ in the 150–160 ns pulse (full width at half maximum) mean specific power of energy input into gas cavity is about 330 kW/cm3. Design of the accelerator and test results are presented and discussed in this paper.

Laser megajoule (LMJ) is a laser facility being built by the French nuclear science directorate, Commissariat a l'Energie Atomique. This facility is a large flashlamp pumped laser (1.8-MJ optical output). The pulsed power conditioning system of LMJ is based on a modular design of 480 modules (400-MJ energy capacitor bank). A new capacitor bank module (CBM) for the LMJ power conditioning system has been developed by the Institute of High Current Electronics (IHCE, Tomsk) in collaboration with International Technologies for High Pulsed Power (France). Two such modules were produced and tested in IHCE. The main parts of the CBM are the following: high-voltage power supplies, command control system, air conditioning system, capacitor block, and cables delivering the energy to a load. The parameters of the module are the following: total rated capacitance of 2900 (+4%) muF, charging voltage up to 24 kV, peak current amplitude of 240 kA, peak stored energy up to 864 kJ, pulsewidth at 10% of peak power of 360 mus, dimensions of 2.3 times 1.5 times 2.5 m3, and weight of ~2500 kg. In nominal regime (24-kV charging voltage, 40-m length cables), the energy delivered to flashlamps in each channel is 74 kJ (86% efficiency). No failures were observed in more than 1000 test shots, and all parameters of the CBM are well within the requirements. Detailed description of the module design, performance, and test results are stated in this paper.

The GIT-32 is current generator developed by IHCE for Weizmann Institute of Science (Israel), devoted for experiments with current carrying pulsed plasma. Main parts of the generator are capacitor bank and multichannel multi-gap spark switch. Generator consists of four identical sections, connected in parallel to one load. Capacitor bank is assembled from 32 IEK-100-0.17 (0.17 muF, 40 nH, 100 kV) capacitors, connected in parallel. It stores ~ 20 kl at 85 kV charging voltage. Each two capacitors are commuted to a load by multi-gap spark switch, which is able to commute by 8 parallel channels. Inductance of the generator is ~ 10 nH, internal resistance ~ 0.005 Ohm. The GIT-32 generator was tested with 10, 15 and 20 nH inductive loads. At 10 nH load and 80 kV of charging voltage it provides 1 MA of current amplitude with 500 ns risetime with damping resistors in discharge circuit and 1.34 MA/570 ns without resistors. The generator operates reliably without any adjustments in 40divide80 kV range of charging voltage. The maximum jitter at 40 kV charging voltage is about 7 ns. The generator is quite compact: dimensions are 3300 x 3300 x 400 mm3 and total weight is about 2500 kg.

The GIT-32 current generator was developed for experiments with current carrying pulsed plasma. The main parts of the generator are capacitor bank, multichannel multigap spark switches, low inductive current driving lines, and central load part. The generator consists of four identical sections, connected in parallel to one load. The capacitor bank is assembled from 32 IEK-100-0.17 (0.17 microF, 40 nH, 100 kV) capacitors, connected in parallel. It stores approximately 18 kJ at 80 kV charging voltage. Each two capacitors are commuted to a load by a multigap spark switch with eight parallel channels. Switches operate in ambient air at atmospheric pressure. The GIT-32 generator was tested with 10, 15, and 20 nH inductive loads. At 10 nH load and 80 kV of charging voltage it provides 1 MA of current amplitude and 490 ns rise time with 0.8 Omega damping resistors in discharge circuit of each capacitor and 1.34 MA530 ns without resistors. The net generator inductance without a load was optimized to be as low as 12 nH, which results in extremely low self-impedance of the generator ( approximately 0.05 Omega). It ensures effective energy coupling with low impedance loads like Z pinch. The generator operates reliably without any adjustments in 40-80 kV range of charging voltage. Maximum jitter (relative to a triggering pulse) at 40 kV charging voltage is about 7 ns and lower at higher charging voltages. Operation and handling are very simple, because no oil and no purified gases are required for the generator. The GIT-32 generator has dimensions of 3200 x 3200 x 400 mm(3) and total weight of about 2500 kg, thus manifesting itself as a simple, robust, and cost effective apparatus.