# Presentation: 030196

## Three Summers

- Adam’s Miscellaneous
- Fermilab Adventures

## Who am I? What do I do?		

- I’m Adam Schreckenberger – for those who don’t know.
- I work in EE Support across the parking lot in the Transfer Gallery.
- I’ve worked here every summer since 2005.
- I build the parts that help physicists carry out their experiments here at the lab.

## EE Support

- 	Sometimes, people do not understand the amount of work and energy needed to run a successful experiment. Aside from the theory, time needs to be taken to build and manufacture a variety of complicated components that can survive decades of use. Some of these parts, do not exist elsewhere and are thus created here at the lab.

## What happens?

- 	Generally, physicists request a product that adheres to specific guidelines. It is then up to the engineer to design parts and systems that make the apparatus function properly. After all that decision making, the designs are sent to the technicians for construction. In-other-words, I’m at the end of the chain; however, a technician’s creative edge often shines through all the turmoil – as I shall show you with my work.

## 2005 - ORBUMP

- My first summer was dedicated to the ORBUMP Power Supply project. If you’re ever in the west side of the booster ring, it’s the big, loud blue box that goes, “ ....-”
- ORBUMP consists of several magnets that generate a local orbit-bump. (Sorry that’s all I know, back to the power supply.)

## 2005 - ORBUMP

- 	The entire top rack of this supply was my responsibility, in addition to the building of one resistor bank and the testing of the four large crank inductors on the middle rack.
- 	The top rack of the supply holds the “Crowbar” thyristor stacks that electrically tie the system to the ground/common. This prevents over-current conditions in the power supply by short-circuiting the voltage source.

## 2005 - ORBUMP

- Here is one of my Crowbars.
- The clamp in the middle is a thyristor stack, which acts as a gate to the common when triggered. Thyristors are essentially diodes with a fancy name, but they have 4 layers of p-n junctions.
- The circuits at left are snubber boards, which suppress transients (spikes) in the current.

## 2005 - OSPI

- My real baby of the year, though, was the OSPI Snubber. I designed this one all by myself and I’m proud to say it has been in tunnel operation since its manufacture.

## 2006 - SMTF

- More crowbars... this time though for the SMTF Proton Driver and the ILC.

## 2006 - PITA

- And then there was PITA. This device checks to make sure that the BPM connectors within the Pelletron are connected properly before the chamber is filled with SF6 (Sulfur hexaflouride). This device has a resolution of under 2.2 pF.

## 2006 - PITA

## 2007

- 	This summer, I have spent all of my time working on the Booster Correction System, from the magnets themselves to the circuitry that runs the power supply.

## 2007 – My Cables

- 	The cables, believe it or not, are incredibly tedious to make, and shockingly cost about $100 with parts alone. One gold plated pin costs $1 – there are 38 pins in each cable and 5 Burndy connectors – add in a spool of 6 conductor cable – and the price mounts pretty quickly.

## 2007 – Resistor Bank

- 	Here is a resistor bank and relay attachment I installed into one of the BCS power supplies. This project required everything from metal fabrication to wiring and even Klixon installation.

## 2007 – BCS Supply

- Pictures of the BCS Supply:

## 2007

- 	Interestingly, this year they decided to trust me near the magnets for the system, and they are quite impressive. Each one contains six different magnet setups – vertical dipole, horizontal dipole, normal quadripole, skew quadripole,  normal sextipole, and skew sextipole. Each needs to be wired into a power supply that controls the impact the magnet has on the beam line.

## 2007 - Magnets

## 2007 – Klixon Wiring

- 	Once again, these devices are temperature sensitive; therefore, I had to wire Klixon breakers from the magnets to the supply.

## 2007 – Klixon Test

- _[Klixon](https://netfiles.uiuc.edu/aschrec2/Work/DSCN0470.MOV)__[ Test Video](https://netfiles.uiuc.edu/aschrec2/Work/DSCN0470.MOV)_

## Projects to Date

- ORBUMP: OSPI, Crowbars, Resistor Bank, RCRB
- KRS: Coils for Monitoring
- SMTF/ILC: Crowbars v1 and v2, Base Fabrication
- BCS: Daisy-Chains, Resistor Banks, Magnet Wiring, Klixon Installation, Transformer Assembly.

## To Be Continued...

- 	I know the memories forged here will last for eternity, and that the friendships made will last a lifetime. I look forward to continuing discussions with Roger on the subject of time, and I thank you all for welcoming me to these meetings.
- 	Speaking of time... I should probably end this ridiculous presentation now. 
- 	See you yesterday,
- 	Adam

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