JP2003279657A - Quick gas-replacing system for wire chamber having film window - Google Patents
Quick gas-replacing system for wire chamber having film windowInfo
- Publication number
- JP2003279657A JP2003279657A JP2002127599A JP2002127599A JP2003279657A JP 2003279657 A JP2003279657 A JP 2003279657A JP 2002127599 A JP2002127599 A JP 2002127599A JP 2002127599 A JP2002127599 A JP 2002127599A JP 2003279657 A JP2003279657 A JP 2003279657A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- wire chamber
- pressure
- wire
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Radiation (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
【0001】 従来大気中において使用するワイヤーチ
ェンバーはPETフィルム等で信号読出ガス(P−10
ガスやマジックガス等)をを密封している。A wire chamber conventionally used in the atmosphere is a PET film or the like, which is a signal reading gas (P-10).
Gas, magic gas, etc.) is sealed.
【0002】 その為フィルム窓が破裂する様な真空引
きや内部−圧力を上げる様なガス充填やガス交換(以下
ガス交換と表わす。)は出来ないのでガス交換にはどう
しても長時間を必要とした。Therefore, it is impossible to perform vacuuming such that the film window bursts, or gas filling or gas exchange (hereinafter referred to as gas exchange) that raises the internal-pressure, so that it took a long time to exchange the gas. .
【0003】 しかしこの発明はワイヤーチェンバーの
内部圧力と大気圧とのバランスを保ちながら十数倍の読
出ガス−流量を流す事により短時間でガス交換を終える
事ができるだけでなくサイクロトロンの使用時間を節約
する省エネルギー発明でもある。However, according to the present invention, it is possible not only to finish the gas exchange in a short time by flowing a read gas-flow rate of a dozen times while maintaining the balance between the internal pressure of the wire chamber and the atmospheric pressure, but also to reduce the use time of the cyclotron. It is also an energy-saving invention that saves money.
【0004】 また昔から簡単に負圧を作る方法として
高速流体の側面に吸込み力が発生する事は良く知られて
いるがこの吸込み力は吸込み量を多くするに従って吸入
力が低下する特性を持ち,これらはイジェクター式真空
ポンプの欠点でもある。It is well known from the old days that a suction force is generated on the side surface of a high-speed fluid as a method for easily creating a negative pressure, but this suction force has a characteristic that the suction force decreases as the suction amount increases. , These are also the drawbacks of the ejector vacuum pump.
【0005】 請求項3の発明はこの欠点を補う為吸い
込み量を多くすると同時に元の高速流体流量を増加すれ
ば吸込み力は低下しない。In order to make up for this drawback, the invention of claim 3 does not reduce the suction force by increasing the suction amount and at the same time increasing the original high-speed fluid flow rate.
【0006】[0006]
【発明の属する技術分野】現在世界の物理学研究所では
サイクロトロンにより加速された高エネルギー粒子を衝
突させ,素粒子を壊し、素粒子の元であるクオークの確
認をする所にまで至っている。BACKGROUND OF THE INVENTION At present, physics research institutes around the world have reached the point where high energy particles accelerated by a cyclotron are collided to destroy elementary particles and confirm the quark which is the source of elementary particles.
【0007】 それらの研究現場には衝突分裂飛散した
粒子(放射線)を選別し,捕らえる放射線選別器(DC
−セパレーター・偏向マグネット等)、放射線検出器
(シンチレーター・チェレンコフ・カウンター等)また
放射線位置検出(ワイヤーチェンバー等)が設置されて
いて、種々の素粒子の測定分析がなされている。At those research sites, a radiation selector (DC) that sorts and captures particles (radiation) that have collided and fragmented and scattered
-A separator, a deflection magnet, etc.), a radiation detector (scintillator, Cherenkov counter, etc.) and a radiation position detection (wire chamber, etc.) are installed, and various elementary particles are measured and analyzed.
【0008】 またこの発明に用いられている真空技術
は広く一般社会で見うけられる。Further, the vacuum technique used in the present invention can be widely found in general society.
【0009】 スーパーでは真空乾燥野菜が真空包装さ
れて販売され,工場では吸着カップが材料や商品を取り
扱い,道路上ではバキュームカーが走っている。Vacuum dried vegetables are vacuum-packed and sold in supermarkets, suction cups handle materials and products in factories, and vacuum cars run on roads.
【0010】[0010]
【従来の技術】 今までのフィルムの窓を持ったワイヤ
ーチェンバーの製造後のガス充填にはフィルム窓の破裂
しない様にゆっくり時間をかけ、ガスフローを徐々に行
い空気とガスとのガス交換終了後、初めてワイヤーチェ
ンバーが、使用出来る代物であった。2. Description of the Related Art Up to now, gas filling after manufacturing a wire chamber having a film window takes a long time so as not to rupture the film window, and gradually performs a gas flow to complete the gas exchange between air and gas. After that, for the first time, the wire chamber was a substitute that could be used.
【0011】 またガス交換の時間は一例として窓面積
1m2×厚さ40cm程度のワイヤーチェンバーでも1
〜2日程度時間を浪費するのが常であった。Further, the time for gas exchange is, for example, 1 in a wire chamber having a window area of 1 m 2 and a thickness of 40 cm.
I used to waste time for about two days.
【0012】 また従来のイジェクター式真空ポンプは
ノズルの喉部の内径を連続的に変化出来ないので小形の
イジェクターポンプから大型の物までシリーズで沢山の
ノズル喉径の違うポンプを生産しなければならなかっ
た。Further, since the conventional ejector type vacuum pump cannot continuously change the inner diameter of the throat portion of the nozzle, a large number of pumps having different nozzle throat diameters must be produced in a series from a small ejector pump to a large one. There wasn't.
【0013】[0013]
【発明が解決しようとする課題】前項で述べた通り、ワ
イヤーチェンバーの始動には時間の掛かるもので実験の
途中(サイクロトロン稼動中)のワイヤーチェンバーに
異常が起きた時には修理、ガス交換に時間がかかり、サ
イクロトロンの大きな加速エネルギー浪費に直結する。As described in the preceding paragraph, it takes time to start the wire chamber, and if an abnormality occurs in the wire chamber during the experiment (while the cyclotron is operating), it takes time to repair and replace the gas. It takes a lot of energy to directly accelerate the cyclotron.
【0014】[0014]
【課題を解決するための手段】先ず,圧縮空気をノズル
を通して流し排気して、ノズルの喉部に生じる負圧と、
圧縮されて供給される読み出しガスの正圧を同圧差に保
ち(例,−0.6atmと+0.6atm)チェンバー
内圧と大気圧をバランスしながら(チェンバーの窓フィ
ルムを膨らまさずに)多量の読出しガスを流す事により
短時間でガス交換を終える。First, compressed air is made to flow through a nozzle and exhausted, and a negative pressure generated in the throat of the nozzle,
Keep the positive pressure of the read gas compressed and supplied at the same pressure difference (eg, -0.6 atm and +0.6 atm) while balancing the internal pressure of the chamber with the atmospheric pressure (without expanding the window film of the chamber). The gas exchange is completed in a short time by flowing the read gas.
【0015】 次にワイヤーチェンバー内のガスの流れ
から外れたデッドスペースを極力無くし、ガス交換の
際、取残−される空気やガスの無い様に、ワイヤーチェ
ンバー自身の内部構造を改善する。Next, the dead space deviated from the gas flow in the wire chamber is eliminated as much as possible, and the internal structure of the wire chamber itself is improved so that there is no air or gas left behind during gas exchange.
【0016】 最後にワイヤーチェンバーの大きさ(容
量)は27cc程度から64万cc程度まで広範囲に及
ぶのでこの装置で取扱う負圧空気の容量も広範囲の変化
に追従できる事が必要である。Finally, since the size (capacity) of the wire chamber covers a wide range from about 27 cc to about 640,000 cc, it is necessary that the capacity of the negative pressure air handled by this device can follow a wide range change.
【0017】 イジェクター真空ポンプもテーパー状の
丸棒をノズル喉部に差し込む事によりノズル喉部の断面
積を増減し広範囲の変化に対応する。The ejector vacuum pump also accommodates a wide range of changes by increasing or decreasing the cross-sectional area of the nozzle throat by inserting a tapered round bar into the nozzle throat.
【0018】[0018]
【発明の実施の形態】この発明(請求項1)の原理を
(図1)に示す。DETAILED DESCRIPTION OF THE INVENTION The principle of the present invention (claim 1) is shown in FIG.
【0019】 この発明(請求項2)の構造を(図3)
に示す。The structure of the present invention (claim 2) is shown in FIG.
Shown in.
【0020】 この発明(請求項3)の原理を(図4)
に示す。The principle of the present invention (claim 3) (FIG. 4)
Shown in.
【0021】 この発明はワイヤーチェンバーの出力読
出ガス圧力と,圧縮空気により発生させた負圧との圧力
差によって多量の読出ガスをワイヤーチェンバーに流し
チェンバー内圧力を大気圧と同圧にバランスを取り−な
がらガス交換を行う。According to the present invention, a large amount of read gas is caused to flow through the wire chamber by the pressure difference between the output read gas pressure of the wire chamber and the negative pressure generated by the compressed air, and the chamber internal pressure is balanced to the atmospheric pressure. -While exchanging gas.
【0022】 またガス交換の際障害となる各チェンバ
ーフレームにあるガスの停滞する隙間にガスの流れを起
こし合わせて急速なガス交換を可能にするものである。Further, the gas flow is caused to occur in the stagnant gap of the gas in each chamber frame, which becomes an obstacle during the gas exchange, thereby enabling a rapid gas exchange.
【0023】[0023]
【実施例】図三がこの発明をX−Yワイヤーチェンバー
に応用する例である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows an example in which the present invention is applied to an XY wire chamber.
【0024】 このガス交換システムを組込んだワイヤ
ーチェンバーは従来の十数分の一のガス交換時間にて計
測できるが,円筒型チェンバー等フィルム窓を持ったす
べてのワイヤーチェンバーに実施できる発明である。The wire chamber incorporating this gas exchange system can measure the gas exchange time which is one tenth of that of the conventional one, but it is an invention that can be applied to all wire chambers having a film window such as a cylindrical chamber. .
【0025】 またX−Yワイヤーチェンバーに実施す
る際にはガス供給,排出口の数を4箇所,6箇所と増や
すとよりガス交換効率を上げる事ができる。Further, when implementing the XY wire chamber, the gas exchange efficiency can be further increased by increasing the number of gas supply / exhaust ports to 4 or 6.
【0026】[0026]
【発明の効果】 このガス交換システムを施したワイヤ
ーチェンバーはフィルム製の窓が破裂したりせず、従来
の十数分の一の時間(窓面積1m2×厚さ40cm程度
のワイヤーチェンバーなら1時間半〜三時間)でガス交
換を終える事ができる。EFFECTS OF THE INVENTION In the wire chamber provided with this gas exchange system, the window made of film does not rupture, and the time is one tenth of that of the conventional one (if the wire chamber having a window area of 1 m 2 and a thickness of about 40 cm is 1 The gas exchange can be completed in half an hour to three hours).
【図1】この発明(請求項1)の原理図である。FIG. 1 is a principle diagram of the present invention (claim 1).
【図2】従来のX−Yワイヤーチェンバー内のガス供給
排出−部分の構造を示した正面図と側面図である。FIG. 2 is a front view and a side view showing a structure of a gas supply / exhaust part in a conventional XY wire chamber.
【図3】この発明(請求項2)をX−Yワイヤーチェン
バー内のガス供給排出部分に施した構造図である。FIG. 3 is a structural diagram in which the present invention (claim 2) is applied to a gas supply / discharge portion in an XY wire chamber.
【図4】この発明(請求項3)の原理図である。FIG. 4 is a principle diagram of the present invention (claim 3).
【符号の説明】 1 ワイヤーチェンバー 2 可変ノズルユニット 3 高圧空気源(P≒6kg/cm2) 4 差圧力検出部 5 アンプ 6 DCモーター 7 読み出し用ガスボンベ 8 9 窓フィルム 10 窓フレーム 11 スペーサーフレーム 12 ガス供給口 13 ガス排出口 14 カソードフレーム 15 Yアノードフレーム 16 GND,PCボード 17 XアノードPCボード 18 ガス密封Oリング 19 窓フレーム 20 スペーサーフレーム 21 Xアノードフレーム 22 カソードフレーム 23 GNDフレーム 24 Yアノードフレーム 25 Oリング 26 ガス排出コネクター 27 窓フィルム 28 縮空気供給口 29 負圧空気吸い込み口 30 ノズル喉部断面積調整棒[Explanation of Codes] 1 Wire Chamber 2 Variable Nozzle Unit 3 High Pressure Air Source (P≈6 kg / cm 2 ) 4 Differential Pressure Detecting Section 5 Amplifier 6 DC Motor 7 Reading Gas Cylinder 8 9 Window Film 10 Window Frame 11 Spacer Frame 12 Gas Supply port 13 Gas discharge port 14 Cathode frame 15 Y Anode frame 16 GND, PC board 17 X Anode PC board 18 Gas sealed O-ring 19 Window frame 20 Spacer frame 21 X Anode frame 22 Cathode frame 23 GND frame 24 Y Anode frame 25 O Ring 26 Gas discharge connector 27 Window film 28 Compressed air supply port 29 Negative pressure air suction port 30 Nozzle throat sectional area adjustment rod
Claims (3)
生じる負圧とワイヤーチェンバー読出用ガスボンベの正
圧を同じ圧力差(例,−0.6atmと+0.6at
m)にする事によりワイヤーチェンバーの内圧を大気圧
と同圧力に保ち正圧と負圧の対称圧力により短時間でガ
ス交換できるシステム。1. The same pressure difference (eg, -0.6 atm and +0.6 at) between the negative pressure generated in the throat of the nozzle by flowing compressed air and the positive pressure of the gas cylinder for reading the wire chamber.
By setting m), the internal pressure of the wire chamber is kept at the same pressure as atmospheric pressure, and the system can exchange gas in a short time by the symmetrical pressure of positive pressure and negative pressure.
改善すべく,ガス停滞の原因となったワイヤー固定部の
逃げ空間をガスの流れに取り込む改造し,ガス交換効率
を改善したワイヤーチェンバー。2. A wire chamber in which gas exchange efficiency is improved by modifying the escape space of the wire fixing portion causing gas stagnation into the gas flow in order to improve the gas flow inside the wire chamber.
喉部にテパー状の丸棒を隙間を明けて差込みそれらを出
し入れする事により喉部を通過する流体の量を連続的に
増減しあたかもノズル径を変化するのと同様な効果を得
ようとする可変ノズルイジェクター真空ポンプ3. A conventional ejector vacuum pump has a nozzle throat in which a tepper-shaped round bar is inserted with a gap between them to insert and withdraw them to continuously increase or decrease the amount of fluid passing through the throat. Variable nozzle ejector vacuum pump trying to get the same effect as changing
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002127599A JP2003279657A (en) | 2002-01-17 | 2002-03-26 | Quick gas-replacing system for wire chamber having film window |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-44010 | 2002-01-17 | ||
JP2002044010 | 2002-01-17 | ||
JP2002127599A JP2003279657A (en) | 2002-01-17 | 2002-03-26 | Quick gas-replacing system for wire chamber having film window |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003279657A true JP2003279657A (en) | 2003-10-02 |
Family
ID=29253500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002127599A Pending JP2003279657A (en) | 2002-01-17 | 2002-03-26 | Quick gas-replacing system for wire chamber having film window |
Country Status (1)
Country | Link |
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JP (1) | JP2003279657A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009221883A (en) * | 2008-03-13 | 2009-10-01 | Denso Corp | Ejector device and vapor compression refrigeration cycle using ejector device |
JP2016217213A (en) * | 2015-05-18 | 2016-12-22 | 株式会社デンソー | Ejector |
-
2002
- 2002-03-26 JP JP2002127599A patent/JP2003279657A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009221883A (en) * | 2008-03-13 | 2009-10-01 | Denso Corp | Ejector device and vapor compression refrigeration cycle using ejector device |
US8191383B2 (en) | 2008-03-13 | 2012-06-05 | Denso Corporation | Ejector device and refrigeration cycle apparatus using the same |
JP2016217213A (en) * | 2015-05-18 | 2016-12-22 | 株式会社デンソー | Ejector |
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