Current Status of the resistive foils in Japan
Atsuhiko OchiKobe University
ATLAS-J MicroMEGAS meeting 4/12/2014
Resistive ink from Jujo chemical:◦ Jujo JELCON CH-8 + Medium + Silica additive◦ About 100CHF/kg◦ The material is not validated yet.
Pending to use this, after our discussion Resistive ink from ESL:
◦ RS12100 Series◦ About 1kCHF/kg◦ The material is well tested as MM electrodes.
2014/12/4A. Ochi, ATLAS-J MicroMEGAS 2
Two candidates of resistive ink
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Jujo のインクを用いた小型MM試作
かなり、出来は良い。 抵抗値は、上の端から下
の端まで 15MΩ くらい。◦ 結構良い値。◦ パターンの出来も、非常に
良い。
2014/12/4A. Ochi, ATLAS-J MicroMEGAS 4
J9 拡大図
先週、 180μm, 200μm, 220μm の3種類の抵抗ストリップを印刷したサンプルが届く。
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ESLを用いたストリップ印刷
150μ/250 μ◦ No good◦ Some lines
are broken
180μ/220μ◦ Good◦ No break
found
200μ/200μ◦ Good◦ No break
found
220μ/180μ◦ Good◦ No break
found
250μ/150μ◦ No good◦ The lines
are attached to next ones
2014/12/4A. Ochi, ATLAS-J MicroMEGAS 6
Printing qualityL S
L/S
New samples … Good quality
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ESL 220μ幅
For SM1 R&D is almost done. We are starting the ordering for module-0
◦ The ESL paste will be delivered to printing company at beginning of January.
◦ The estimated foil delivering (to Kobe) is mid of January.
◦ The cost for printing will be 2M JPY, and I confirmed to ATLAS-Japan fund manager that it will be provided from KEK.
2014/12/4A. Ochi, ATLAS-J MicroMEGAS 8
Current status for screen printing
For SM2 Ordering has been already done.
◦ Total cost: 4M JPY◦ Half of them is covered by KEK (ATLAS-J), and another half
is covered by Kobe U. (Detector R&D budget).◦ The small modification for drawings will be needed.◦ Proof check of the pattern will be done in this week.◦ Mask production … 1.5 weeks◦ Image development on the foil … 1 week (Laytech)◦ The sputtering will be available at end of this year or the
beginning of the next year. (Be-sputter)◦ Lift off process … 1 week (Laytech)◦ The foils will be delivered to us in mid January
2014/12/4A. Ochi, ATLAS-J MicroMEGAS 9
Current status for sputtering
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