Cascade Point Page 7

  Stark and I both stared at him. Then slowly, Stark nodded. "I think I understand, sir. But we'd need a name and face, wouldn't we?"

  "I don't know. We're talking about a whole race, not a specific individual. It may be possible to get someone at random just by knowing what they look like generally."

  "It's worth a try, certainly," Stark agreed.

  "If it's not too much trouble," I cut in irritably, "would one of you mind telling me what you're talking about?"

  They just looked at me... and suddenly I understood. "Oh, no. No. Forget it. I won't do it."

  "Come now, Mr. Morgan," the general said soothingly, "we can at least discuss it, can't we?"

  And in the end I gave in.

  —

  It's been nearly a year now, and I really have no complaints. I would have preferred being on Earth, but Blaine wanted everyone involved with the project kept isolated at the new base in Mairan Crater, himself the single exception. Still, my quarters are quite comfortable and I'm treated with the courtesy due me as the chief—and only member, so far—of the new Office of Alien Communication, so I suppose I'm doing pretty well.

  My Seipaic contact, Garun'Sutt, has finally gotten over her original terror at my alien presence in her dreams and is beginning to consider our relationship something of an adventure. I suspect this is partly due to her governments interest in her communication with me and the resulting attention she gets from her people. It's not everyone, after all, who can talk to an alien who's at least—we estimate— fifty light-years away. But whatever the reason, I'm not complaining. I'm still not sure why I always get her when I send out these dreams, though I suspect her face is just very similar to that of the first dead Seipai I saw. Since she seems to be my only contact I'm glad she's calming down. We've started exchanging factual data about our respective races, and are trying to figure out a way to locate each others planet. Blaine isn't absolutely sure that's a good idea, but I think that by the time we solve the problem I'll know Garun'Sutt and her people well enough to know if we can trust them. In fact, I'm secretly hoping the Seipai can get a ship here to visit us within my lifetime. The way Stark and his PR men are pussyfooting around the whole issue, I figure there's an even chance Earth won't hear about the Seipai until they actually drop anchor here.

  And I'd love to be around to see the headlines that day.

  Afterword

  To answer the standard question "Where do you get your ideas?" I got this one, appropriately enough, from a dream. Visiting my sister in California, I dreamed of a friend back home and tried to

  ask her a question. I woke up before she could answer, and dreamsending as a profession was born.

  "The Dreamsender" was a bittersweet turning point in my life. It was my second sale and therefore proof that I wasn't just a single- shot writer; but the word of its acceptance came the same July 1979 day that I learned my thesis adviser had suddenly died. The combination of these two events led, five months later, to my leaving physics entirely and striking out toward the quixotic goal of becoming a professional, living-wage-earning writer.

  How much the fields of physics and science fiction have benefited from that decision I can't say. I do know, however, that I've certainly gained from the deal.

  The Energy Crisis of 2215

  Its birth had been in the fiery turbulence of the primordial explosion, and for the billions of years since then the tiny black hole had drifted quietly through the expanding universe. Not once in all that time had it found itself closer than half a light-year to any star, much less approaching to within a few million miles as it was doing now. But there is a first time for everything.

  Never very large to begin with, the black hole had steadily been losing mass during its long lifetime, and its gravitational effects were virtually undetectable even tens of meters away. But the strange laws which governed its existence required that a decrease in mass be accompanied by an increase in effective temperature, and so the black hole was now radiating energy and particles as if it were at a quadrillion degrees. Without this power output it might have slipped unnoticed through the solar system; as things were, it hadn't a hope of doing so.

  The black hole was just crossing the orbit of Saturn when it was first detected by a routine gamma-ray scan. Identification came soon afterwards; and on Earth, Luna, Ceres, Hestia, and the Space Colonies debates were soon raging as to what should be done about the intruder. A large body of opinion was for letting the black hole continue unmolested along its hyperbolic path, or possibly even assisting it on its way out of the system. But others saw a unique opportunity in the chance meeting, and their views eventually prevailed, though at the cost of bitter feelings and many broken friendships.

  The preparations took even longer than the debates had, but finally all was ready, and on January 1, 2215, the first of four specially designed space tugs matched orbits with the black hole and began pouring protons into it. As the intruders positive charge increased, the tugs used electric fields to nudge it from its original course and, eventually, into a stable orbit at one of the Earth-Luna Lagrangian points.

  Project Firefly had begun. —

  Dr. Ray Carter, Director of the Firefly Project, ran his eyes over the bank of monitor screens that wrapped themselves around the main control board like a lucky horseshoe. The glance was pure reflex; everything had been ready for the past two hours and the only thing holding up the works now were the speeches still going on from the main auditorium. He felt no impatience, though; if turning Day One into a media event would help sell Firefly to the public, it had Carters blessing. Glancing around the room, Carter noticed a familiar figure staring out the port into the blackness outside. Walking carefully in his Velcro shoes, he joined the other. "You can't see it from here, Senator," he remarked by way of greeting.

  Senator Chou didn't turn. "I know," he said, his voice carefully neutral. Nodding toward the port, he continued, "It's two kilometers to the DeVega dipole accelerator platform, a hundred meters to the energy collector sphere, and another half kilometer to the black hole itself. And the whole thing a superbly engineered waste of money."

  Carter winced slightly. Chou had always been one of the strongest opponents of Firefly, and Carter knew better than to try to argue with him. Apparently even coming over to say hello had been a mistake. "If you'll excuse me..."

  Chou turned to face him. "Sorry. No real point in screaming about it now. But it wasn't necessary, you know. Fusion plants and solar power are quite adequate for Earths needs."

  "For now, sure. But what about the future? Even at the present rate of increase we would have a hard time building enough fusion plants to supply our needs by the turn of the century."

  "The sun will still be there."

  "Sure will," Carter nodded. "And did you know you'd need a billion and a half square kilometers of solar collectors to generate as much power as Firefly will? That's about three times the Earths surface area, I believe. Excuse me, please."

  Carter went back to the control board, his annoyance at Chou evaporating quickly. Rossetti, chief operator, looked up. "The Secretary-General is just about finished, Doc," he said.

  "Good. How are the collectors doing?"

  "Seem to be okay. Firefly's throwing off a lot of particles, both charged and neutral, but most of them are being collected, or at least stopped. Efficiency for charges is hovering near eighty-five percent; heat exchangers about half that."

  Carter nodded. Firefly—the black hole was almost universally called by the name of the project nowadays—was behaving as expected, losing its mass in a thermal spectrum that included both photons and subatomic particles. The fast- moving charged particles were no problem; a set of electromagnetic fields at the collector sphere slowed them down to safe speeds, simultaneously converting their kinetic energy into electric current. The X rays and neutral particles were captured by a special multicomponent liquid blanket, their energy absorbed as heat to be changed into electricity by more indirect means. And
for the ultra-high-energy gamma rays that passed through the collectors as if they were tissue paper, there were ten meters of shielding.

  Pity we can't use the neutrinos, too, Carter thought wryly. Firefly's temperature, he noted, was still increasing, and he hoped the Secretary-General's speech wouldn't take much longer.

  A yellow light flashed twice. They were ready in the auditorium. "Okay, Rossetti. Fire when ready."

  "Aye, aye, Admiral." Rossetti's hands moved over the controls as Carter watched the indicators. Kilometers away, the three massive DeVega accelerators came to life, sending narrow beams of neutrons directly into the tiny black hole. Firefly's radiation levels jumped as the gravitational energy of the falling neutrons began to reach the collectors. Rossetti carefully adjusted the flux levels and Firefly's temperature began to stabilize.

  "That's it, Doc," Rossetti said at last. "Total neutron flux about ten to the twenty-eighth per second; total Firefly luminosity one point six times ten to the eighteenth watts. Temperature holding near ten to the fifteenth degrees Kelvin. We've got steady state and she's running like a champ."

  A loud cheer erupted in the control room, echoed, no doubt, in the auditorium. Someplace a cork popped loudly, accompanied by the steady hum of video cameras. Carter smiled for the reporters, his first real smile in weeks. After months of argument and backbreaking work, the closest thing to a total matter converter that mankind was ever likely to have was finally operational.

  There were still things to be done, of course, but most of them were routine. He would first have to give a statement to the assembled dignitaries and cameras in the auditorium. Then came a check of the maser banks that would be beaming the energy to Earth and Luna, a quick trip to each of the DeVega accelerators to personally congratulate the operation crews there, and spot checks of other parts of the complex.

  Five hours later he was finished, and he made a last stop back in the control room. "Any fluctuations in the plate potential?" he asked the dark-skinned man who had taken Rossetti's place at the main control board.

  "No problems, Dr. Carter," Kapoor said, his gloomy face in marked contrast to the smiles worn by the rest of the Firefly Project staff today. "The black hole is holding position to a small fraction of a fermi, as nearly as we can tell."

  Carter nodded satisfaction. The carefully shaped electric field of the main plates was all that held the positively charged black hole suspended in place at the focus of the three neutron beams. If it drifted even slightly the beams would miss the tiny object. "Anything else to report?"

  "No, sir."

  "Okay. Well, I'm off. See you in three weeks."

  Kapoor glanced up. "You're going on vacation?"

  "Theoretically, yes. Practically, it'll be one week of rest and two of speeches on Earth and Luna."

  "It will be a nice change for you, anyway."

  "Yes." Talking to Kapoor always depressed Carter a little. Something about the Indian's attitude seemed to indicate disapproval, although it was nothing you could put your finger on. As near as Carter could remember, Kapoor's geniality had evaporated during the Assembly's debates on a name for the project. It had come within a hair of being called Shiva, after the destroyer/regenerator of Hinduism, and Carter strongly suspected that Kapoor had considered even the suggestion to be sacrilegious. "Well, take care of the project, Kapoor," he said, a bit lamely, and left the room.

  It could have been worse, Carter thought, walking down the hall. The Assembly had also considered the name Lucifer.

  —

  As things turned out, Carter was not away from Firefly for three weeks. He was gone for exactly fifty-eight hours, and the ship that returned him to the station was a big Patrol craft that made the trip in record time. No one aboard would tell him what was going on, but the message was painfully clear.

  Something was terribly wrong at Firefly.

  —

  The entire senior staff was assembled in the conference room when Carter arrived and slid into his usual chair. Nodding to the group, he turned to the Deputy Director and asked, "What's happened, Paul?"

  Dr. Paul Rurik looked like he was next in line for a oneway tumbril ride. "We may have a runaway on our hands, Ray."

  Carter felt his hands tightening into fists under the table. "Fill me in."

  Rurik touched a switch and a set of graphs appeared on one of the displays. "During last night's Owl shift Firefly's temperature started to rise. When we tried to restabilize this morning we discovered we couldn't do so. We tried everything we could think of and then sent the Patrol to get you." "Who was the operator last night?"

  "I was, Doctor," a young man spoke up, a slight quaver in his voice.

  "It wasn't Galton's fault," Rurik said. "The temperatures were within the allowable range we've calculated."

  Carter nodded heavily. An operator couldn't be expected to notice that the rate of temperature increase was not following the theoretical curve. Only one of the scientists like Rurik or himself would have had the necessary knowledge.

  Rurik went on, "I suspect Firefly drifted a little out of place, causing one or more of the neutron beams to miss it"

  "No." Carter pointed to a display. "If that had happened you'd have gotten a big energy jump in the heat exchanger directly across from the beam that's missing. Instead, that extra neutron flux is spread out over several exchangers; furthermore, it's happening for all three beams. The beams aren't missing—they're being deflected."

  "How?"

  Carter looked toward the voice in surprise. "What are you doing here, Senator?"

  "I was still here at Firefly when the crisis occurred," Chou said. "It is my right to be kept informed. How are the neutrons being deflected, Doctor?"

  "Firefly emits particles in a thermal spectrum," Carter explained. "That means there are some at every speed from zero to near lightspeed. The ones that are moving slowly tend to stay near the black hole, forming a sort of cloud around it, and it's this cloud that's deflecting the beams."

  "Surely they can't change the beam directions very much," Chou argued.

  "They don't have to," Rurik put in. "Firefly is much smaller than the neutrons themselves. But, Ray, we took that effect into account when we set our temperature limits."

  "I know. All I can think of is that our subatomic particle theory must be wrong somehow. If there are some particles coming out of Firefly that we haven't taken into account, all of our temperature curve calculations will be off."

  "Hell cubed," Rurik muttered under his breath. "I'll get the theory people on this right away. Maybe with the extra particle emission data Firefly's giving them they can figure out where we're going wrong."

  "For the moment, that won't help us," Carter said. "What we have to do is get more mass into Firefly, and that as soon as possible. The hotter it gets, the denser that particle cloud becomes. Not much, since most of the particles emitted have high kinetic energies, but even a slight increase in the number of low-energy particles just makes things worse. What have we got that we can throw at the black hole?"

  "We have a spare DeVega accelerator," Rossetti volunteered, "but I don't think that'll help any."

  "Why not?" Senator Chou asked. "That would give you an extra neutron beam."

  For an instant Carter had an overpowering urge to tell the Senator to shut up. None of them had the time to explain things to a layman. "DeVega dipole accelerators require very tricky and sensitive electromagnetic fields to function. On a ring the diameter of the accelerator platform we can place only three DeVegas, spaced one hundred twenty degrees apart. Any closer and their fields would interfere with each other."

  "What about putting the extra accelerator farther out from the center?" Chou persisted.

  "At the distance we'd need the beam would spread out too much to be useful. And before you ask, directly above and below Firefly are the charged plates that hold it in place, so we can't run a neutron beam through there. Paul, can we increase present flux any?"

  "No way. We'
re already running them ten percent above spec maximum, though I don't know how long they can hold that. We may in fact have stopped the runaway—the temperature is changing so slowly now we can't tell if it's going up or down."

  "Let's assume it's still going up," Carter said. "Anything else we can use?"

  "We've got a few X-ray lasers," someone said. "They could be set up to fire at Firefly."

  "I've already checked that," Rossetti said. "It won't give a significant mass increment, and might add an extra scattering component to the neutron beams."

  "Sir?" Galton spoke up hesitantly. "I may have an idea."

  "Spit it out, son," Rurik said brusquely. "This is no time to be shy."

  Carter winced at the tone as Galton blushed slightly. The young man's reticence was clearly not shyness, but instead the result of guilt feelings over his part in this mess. Rurik had never been good at understanding human emotion, though. He had declared that the fault was not Galton's and, for him, that ended the subject. It would never occur to him that Galton might still be upset.

  "Sir, the DeVegas will accelerate any neutral particle that has a reasonable dipole moment. If we used, say, iron atoms instead of neutrons, we might be able to reverse the runaway."

  Rurik nodded slowly. "That might just work, Galton. You'll probably get fewer hits on Firefly because of heightened beam self-interference diffusion, but the ones that go in are fifty-six times more massive. And they'll be deflected less by that particle cloud around Firefly." He looked at Carter inquiringly.

  "It's worth a try," Carter agreed. "Anyone know how long it would take to switch beam materials?"

  "I checked, sir," Galton said. "The beam would only have to be off for ten minutes. And there's enough spare iron around for about ten hours of operation."

  "If we can't reverse the runaway in that time we'll have to try something else, anyway." But to have the beams off for even ten minutes might prove disastrous. Carter weighed the options briefly, painfully aware of the need for speed. "All right. Galton, get the DeVega crews together and brief them. We'll switch just one accelerator for now—make it Beta. If it helps, we'll do the other two a little later. Paul, I suggest you get the control room people ready for the switchover. The rest of you go to your Emergency posts—I want to be ready if any problems crop up. Get to it."